/usr/bin/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_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:13:32,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:13:32,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:13:32,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:13:32,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:13:32,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:13:32,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:13:32,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:13:32,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:13:32,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:13:32,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:13:32,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:13:32,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:13:32,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:13:32,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:13:32,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:13:32,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:13:32,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:13:32,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:13:32,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:13:32,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:13:32,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:13:32,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:13:32,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:13:32,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:13:32,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:13:32,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:13:32,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:13:32,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:13:32,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:13:32,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:13:32,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:13:32,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:13:32,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:13:32,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:13:32,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:13:32,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:13:32,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:13:32,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:13:32,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:13:32,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:13:32,140 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 [2019-11-06 22:13:32,168 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:13:32,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:13:32,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:13:32,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:13:32,170 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:13:32,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:13:32,170 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:13:32,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:13:32,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:13:32,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:13:32,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:13:32,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:13:32,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:13:32,173 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:13:32,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:13:32,173 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:13:32,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:13:32,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:13:32,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:13:32,174 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:13:32,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:13:32,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:13:32,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:13:32,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:13:32,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:13:32,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:13:32,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:13:32,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:13:32,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:13:32,462 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:13:32,482 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:13:32,486 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:13:32,487 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:13:32,488 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:13:32,489 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-11-06 22:13:32,568 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a23c22aa6/beb1c124ad004783badabff5a052add2/FLAG08f83184a [2019-11-06 22:13:33,213 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:13:33,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-11-06 22:13:33,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a23c22aa6/beb1c124ad004783badabff5a052add2/FLAG08f83184a [2019-11-06 22:13:33,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a23c22aa6/beb1c124ad004783badabff5a052add2 [2019-11-06 22:13:33,417 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:13:33,418 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:13:33,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:13:33,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:13:33,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:13:33,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:33" (1/1) ... [2019-11-06 22:13:33,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@273ae176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:33, skipping insertion in model container [2019-11-06 22:13:33,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:33" (1/1) ... [2019-11-06 22:13:33,435 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:13:33,533 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:13:34,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:13:34,368 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:13:34,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:13:34,643 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:13:34,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:34 WrapperNode [2019-11-06 22:13:34,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:13:34,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:13:34,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:13:34,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:13:34,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:34" (1/1) ... [2019-11-06 22:13:34,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:34" (1/1) ... [2019-11-06 22:13:34,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:34" (1/1) ... [2019-11-06 22:13:34,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:34" (1/1) ... [2019-11-06 22:13:34,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:34" (1/1) ... [2019-11-06 22:13:34,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:34" (1/1) ... [2019-11-06 22:13:34,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:34" (1/1) ... [2019-11-06 22:13:34,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:13:34,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:13:34,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:13:34,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:13:34,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:34" (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 [2019-11-06 22:13:34,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:13:34,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:13:34,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:13:34,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:13:34,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-06 22:13:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-06 22:13:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-06 22:13:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:13:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-06 22:13:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-06 22:13:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-06 22:13:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-06 22:13:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-06 22:13:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-06 22:13:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-06 22:13:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:13:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:13:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:13:36,812 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:13:36,813 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 22:13:36,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:36 BoogieIcfgContainer [2019-11-06 22:13:36,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:13:36,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:13:36,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:13:36,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:13:36,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:13:33" (1/3) ... [2019-11-06 22:13:36,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457f7955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:36, skipping insertion in model container [2019-11-06 22:13:36,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:34" (2/3) ... [2019-11-06 22:13:36,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457f7955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:36, skipping insertion in model container [2019-11-06 22:13:36,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:36" (3/3) ... [2019-11-06 22:13:36,822 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-11-06 22:13:36,832 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:13:36,840 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-06 22:13:36,851 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-06 22:13:36,880 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:13:36,881 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:13:36,881 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:13:36,881 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:13:36,881 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:13:36,881 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:13:36,882 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:13:36,882 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:13:36,909 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states. [2019-11-06 22:13:36,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-06 22:13:36,924 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:36,925 INFO L410 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] [2019-11-06 22:13:36,927 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:36,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:36,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1062699127, now seen corresponding path program 1 times [2019-11-06 22:13:36,943 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:36,944 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704385347] [2019-11-06 22:13:36,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:38,047 WARN L191 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2019-11-06 22:13:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:38,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:38,102 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704385347] [2019-11-06 22:13:38,103 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:38,103 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:38,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106259873] [2019-11-06 22:13:38,110 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:38,110 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:38,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:38,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:38,127 INFO L87 Difference]: Start difference. First operand 447 states. Second operand 4 states. [2019-11-06 22:13:38,756 WARN L191 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2019-11-06 22:13:41,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:41,943 INFO L93 Difference]: Finished difference Result 697 states and 1222 transitions. [2019-11-06 22:13:41,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:41,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2019-11-06 22:13:41,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:41,983 INFO L225 Difference]: With dead ends: 697 [2019-11-06 22:13:41,983 INFO L226 Difference]: Without dead ends: 550 [2019-11-06 22:13:41,991 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:42,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2019-11-06 22:13:42,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 544. [2019-11-06 22:13:42,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2019-11-06 22:13:42,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 719 transitions. [2019-11-06 22:13:42,086 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 719 transitions. Word has length 54 [2019-11-06 22:13:42,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:42,087 INFO L462 AbstractCegarLoop]: Abstraction has 544 states and 719 transitions. [2019-11-06 22:13:42,087 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:42,087 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 719 transitions. [2019-11-06 22:13:42,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-06 22:13:42,092 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:42,092 INFO L410 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] [2019-11-06 22:13:42,092 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:42,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:42,093 INFO L82 PathProgramCache]: Analyzing trace with hash -194729860, now seen corresponding path program 1 times [2019-11-06 22:13:42,093 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:42,093 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169185185] [2019-11-06 22:13:42,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:42,759 WARN L191 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2019-11-06 22:13:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:42,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:42,783 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169185185] [2019-11-06 22:13:42,783 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:42,784 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:42,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013828771] [2019-11-06 22:13:42,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:42,786 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:42,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:42,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:42,787 INFO L87 Difference]: Start difference. First operand 544 states and 719 transitions. Second operand 4 states. [2019-11-06 22:13:43,261 WARN L191 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2019-11-06 22:13:45,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:45,361 INFO L93 Difference]: Finished difference Result 959 states and 1321 transitions. [2019-11-06 22:13:45,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:45,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2019-11-06 22:13:45,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:45,368 INFO L225 Difference]: With dead ends: 959 [2019-11-06 22:13:45,369 INFO L226 Difference]: Without dead ends: 718 [2019-11-06 22:13:45,371 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:45,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2019-11-06 22:13:45,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 712. [2019-11-06 22:13:45,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2019-11-06 22:13:45,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 957 transitions. [2019-11-06 22:13:45,442 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 957 transitions. Word has length 54 [2019-11-06 22:13:45,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:45,442 INFO L462 AbstractCegarLoop]: Abstraction has 712 states and 957 transitions. [2019-11-06 22:13:45,443 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:45,443 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 957 transitions. [2019-11-06 22:13:45,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-06 22:13:45,448 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:45,449 INFO L410 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] [2019-11-06 22:13:45,450 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:45,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:45,450 INFO L82 PathProgramCache]: Analyzing trace with hash 509758050, now seen corresponding path program 1 times [2019-11-06 22:13:45,450 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:45,451 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025235305] [2019-11-06 22:13:45,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:46,223 WARN L191 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2019-11-06 22:13:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:46,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:46,260 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025235305] [2019-11-06 22:13:46,260 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:46,260 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 22:13:46,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127478204] [2019-11-06 22:13:46,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 22:13:46,261 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:46,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 22:13:46,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:13:46,262 INFO L87 Difference]: Start difference. First operand 712 states and 957 transitions. Second operand 11 states. [2019-11-06 22:13:46,933 WARN L191 SmtUtils]: Spent 560.00 ms on a formula simplification that was a NOOP. DAG size: 290 [2019-11-06 22:13:51,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:51,888 INFO L93 Difference]: Finished difference Result 2252 states and 3213 transitions. [2019-11-06 22:13:51,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-06 22:13:51,889 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2019-11-06 22:13:51,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:51,903 INFO L225 Difference]: With dead ends: 2252 [2019-11-06 22:13:51,903 INFO L226 Difference]: Without dead ends: 2121 [2019-11-06 22:13:51,906 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2019-11-06 22:13:51,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2019-11-06 22:13:51,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 723. [2019-11-06 22:13:51,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2019-11-06 22:13:51,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 971 transitions. [2019-11-06 22:13:51,965 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 971 transitions. Word has length 54 [2019-11-06 22:13:51,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:51,968 INFO L462 AbstractCegarLoop]: Abstraction has 723 states and 971 transitions. [2019-11-06 22:13:51,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-06 22:13:51,968 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 971 transitions. [2019-11-06 22:13:51,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-06 22:13:51,970 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:51,970 INFO L410 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] [2019-11-06 22:13:51,971 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:51,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:51,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1420674109, now seen corresponding path program 1 times [2019-11-06 22:13:51,971 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:51,972 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917516075] [2019-11-06 22:13:51,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:52,530 WARN L191 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2019-11-06 22:13:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:52,553 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917516075] [2019-11-06 22:13:52,554 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:52,554 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:52,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040333654] [2019-11-06 22:13:52,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:52,555 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:52,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:52,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:52,556 INFO L87 Difference]: Start difference. First operand 723 states and 971 transitions. Second operand 4 states. [2019-11-06 22:13:53,101 WARN L191 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2019-11-06 22:13:55,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:55,675 INFO L93 Difference]: Finished difference Result 1390 states and 1920 transitions. [2019-11-06 22:13:55,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:55,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2019-11-06 22:13:55,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:55,681 INFO L225 Difference]: With dead ends: 1390 [2019-11-06 22:13:55,682 INFO L226 Difference]: Without dead ends: 1061 [2019-11-06 22:13:55,683 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:55,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2019-11-06 22:13:55,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1054. [2019-11-06 22:13:55,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1054 states. [2019-11-06 22:13:55,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1429 transitions. [2019-11-06 22:13:55,737 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1429 transitions. Word has length 55 [2019-11-06 22:13:55,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:55,737 INFO L462 AbstractCegarLoop]: Abstraction has 1054 states and 1429 transitions. [2019-11-06 22:13:55,737 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:55,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1429 transitions. [2019-11-06 22:13:55,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-06 22:13:55,740 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:55,740 INFO L410 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] [2019-11-06 22:13:55,741 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:55,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:55,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1526715040, now seen corresponding path program 1 times [2019-11-06 22:13:55,742 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:55,742 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391652968] [2019-11-06 22:13:55,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:56,476 WARN L191 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2019-11-06 22:13:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:56,513 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391652968] [2019-11-06 22:13:56,513 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:56,513 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:13:56,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661444060] [2019-11-06 22:13:56,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-06 22:13:56,515 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:56,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-06 22:13:56,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-11-06 22:13:56,516 INFO L87 Difference]: Start difference. First operand 1054 states and 1429 transitions. Second operand 13 states. [2019-11-06 22:13:57,704 WARN L191 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 303 DAG size of output: 301 [2019-11-06 22:14:03,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:03,757 INFO L93 Difference]: Finished difference Result 3825 states and 5350 transitions. [2019-11-06 22:14:03,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-06 22:14:03,757 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2019-11-06 22:14:03,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:03,776 INFO L225 Difference]: With dead ends: 3825 [2019-11-06 22:14:03,777 INFO L226 Difference]: Without dead ends: 3626 [2019-11-06 22:14:03,779 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2019-11-06 22:14:03,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3626 states. [2019-11-06 22:14:03,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3626 to 1070. [2019-11-06 22:14:03,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2019-11-06 22:14:03,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1452 transitions. [2019-11-06 22:14:03,880 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1452 transitions. Word has length 55 [2019-11-06 22:14:03,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:03,881 INFO L462 AbstractCegarLoop]: Abstraction has 1070 states and 1452 transitions. [2019-11-06 22:14:03,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-06 22:14:03,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1452 transitions. [2019-11-06 22:14:03,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-06 22:14:03,883 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:03,883 INFO L410 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] [2019-11-06 22:14:03,884 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:03,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:03,884 INFO L82 PathProgramCache]: Analyzing trace with hash -822227130, now seen corresponding path program 1 times [2019-11-06 22:14:03,884 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:03,884 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967045509] [2019-11-06 22:14:03,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:04,461 WARN L191 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2019-11-06 22:14:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:14:04,491 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967045509] [2019-11-06 22:14:04,491 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:04,491 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:14:04,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672385835] [2019-11-06 22:14:04,492 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:14:04,492 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:04,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:14:04,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:14:04,493 INFO L87 Difference]: Start difference. First operand 1070 states and 1452 transitions. Second operand 10 states. [2019-11-06 22:14:04,994 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2019-11-06 22:14:08,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:08,715 INFO L93 Difference]: Finished difference Result 4052 states and 5667 transitions. [2019-11-06 22:14:08,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:14:08,721 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2019-11-06 22:14:08,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:08,736 INFO L225 Difference]: With dead ends: 4052 [2019-11-06 22:14:08,737 INFO L226 Difference]: Without dead ends: 3292 [2019-11-06 22:14:08,740 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2019-11-06 22:14:08,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2019-11-06 22:14:08,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 2379. [2019-11-06 22:14:08,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2379 states. [2019-11-06 22:14:08,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2379 states to 2379 states and 3335 transitions. [2019-11-06 22:14:08,937 INFO L78 Accepts]: Start accepts. Automaton has 2379 states and 3335 transitions. Word has length 55 [2019-11-06 22:14:08,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:08,937 INFO L462 AbstractCegarLoop]: Abstraction has 2379 states and 3335 transitions. [2019-11-06 22:14:08,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:14:08,937 INFO L276 IsEmpty]: Start isEmpty. Operand 2379 states and 3335 transitions. [2019-11-06 22:14:08,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-06 22:14:08,940 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:08,941 INFO L410 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] [2019-11-06 22:14:08,941 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:08,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:08,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1576357576, now seen corresponding path program 1 times [2019-11-06 22:14:08,942 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:08,943 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066730710] [2019-11-06 22:14:08,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:09,570 WARN L191 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2019-11-06 22:14:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:14:09,598 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066730710] [2019-11-06 22:14:09,598 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:09,598 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 22:14:09,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743740022] [2019-11-06 22:14:09,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 22:14:09,599 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:09,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 22:14:09,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:14:09,600 INFO L87 Difference]: Start difference. First operand 2379 states and 3335 transitions. Second operand 11 states. [2019-11-06 22:14:10,592 WARN L191 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 290