/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_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:12:28,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:12:28,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:12:28,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:12:28,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:12:28,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:12:28,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:12:28,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:12:28,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:12:28,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:12:28,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:12:28,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:12:28,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:12:28,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:12:28,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:12:28,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:12:28,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:12:28,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:12:28,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:12:28,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:12:28,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:12:28,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:12:28,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:12:28,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:12:28,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:12:28,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:12:28,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:12:28,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:12:28,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:12:28,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:12:28,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:12:28,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:12:28,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:12:28,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:12:28,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:12:28,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:12:28,247 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 22:12:28,274 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:12:28,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:12:28,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:12:28,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:12:28,278 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:12:28,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:12:28,279 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:12:28,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:12:28,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:12:28,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:12:28,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:12:28,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:12:28,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:12:28,282 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:12:28,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:12:28,282 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:12:28,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:12:28,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:12:28,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:12:28,283 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:12:28,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:12:28,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:12:28,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:12:28,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:12:28,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:12:28,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:12:28,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:12:28,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:12:28,285 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:12:28,558 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:12:28,572 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:12:28,575 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:12:28,577 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:12:28,577 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:12:28,578 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-11-06 22:12:28,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f9486edd/14106bd04f9e4878be00d478cfe20cd9/FLAG7ba67c967 [2019-11-06 22:12:29,243 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:12:29,243 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-11-06 22:12:29,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f9486edd/14106bd04f9e4878be00d478cfe20cd9/FLAG7ba67c967 [2019-11-06 22:12:29,484 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f9486edd/14106bd04f9e4878be00d478cfe20cd9 [2019-11-06 22:12:29,495 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:12:29,496 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:12:29,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:12:29,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:12:29,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:12:29,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:12:29" (1/1) ... [2019-11-06 22:12:29,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@789b381a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:29, skipping insertion in model container [2019-11-06 22:12:29,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:12:29" (1/1) ... [2019-11-06 22:12:29,513 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:12:29,599 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:12:30,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:12:30,249 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:12:30,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:12:30,724 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:12:30,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:30 WrapperNode [2019-11-06 22:12:30,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:12:30,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:12:30,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:12:30,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:12:30,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:30" (1/1) ... [2019-11-06 22:12:30,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:30" (1/1) ... [2019-11-06 22:12:30,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:30" (1/1) ... [2019-11-06 22:12:30,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:30" (1/1) ... [2019-11-06 22:12:30,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:30" (1/1) ... [2019-11-06 22:12:30,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:30" (1/1) ... [2019-11-06 22:12:30,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:30" (1/1) ... [2019-11-06 22:12:30,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:12:30,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:12:30,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:12:30,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:12:30,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:30" (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 22:12:30,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:12:30,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:12:30,959 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:12:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:12:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-06 22:12:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-11-06 22:12:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-06 22:12:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-06 22:12:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:12:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-06 22:12:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-06 22:12:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-06 22:12:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-06 22:12:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-06 22:12:30,963 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-06 22:12:30,963 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-06 22:12:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:12:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:12:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:12:32,581 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:12:32,582 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 22:12:32,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:12:32 BoogieIcfgContainer [2019-11-06 22:12:32,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:12:32,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:12:32,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:12:32,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:12:32,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:12:29" (1/3) ... [2019-11-06 22:12:32,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e7ef95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:12:32, skipping insertion in model container [2019-11-06 22:12:32,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:30" (2/3) ... [2019-11-06 22:12:32,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e7ef95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:12:32, skipping insertion in model container [2019-11-06 22:12:32,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:12:32" (3/3) ... [2019-11-06 22:12:32,603 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-11-06 22:12:32,618 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:12:32,645 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-06 22:12:32,659 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-06 22:12:32,702 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:12:32,702 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:12:32,702 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:12:32,702 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:12:32,703 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:12:32,703 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:12:32,703 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:12:32,703 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:12:32,742 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states. [2019-11-06 22:12:32,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-11-06 22:12:32,775 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:32,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:12:32,779 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:32,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:32,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1251267404, now seen corresponding path program 1 times [2019-11-06 22:12:32,795 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:32,795 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112695938] [2019-11-06 22:12:32,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:33,802 WARN L191 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:12:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:33,877 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 22:12:33,878 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112695938] [2019-11-06 22:12:33,879 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:33,879 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:12:33,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097813118] [2019-11-06 22:12:33,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:12:33,886 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:33,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:12:33,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:12:33,903 INFO L87 Difference]: Start difference. First operand 387 states. Second operand 4 states. [2019-11-06 22:12:34,251 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:12:36,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:36,848 INFO L93 Difference]: Finished difference Result 709 states and 1253 transitions. [2019-11-06 22:12:36,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:12:36,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2019-11-06 22:12:36,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:36,872 INFO L225 Difference]: With dead ends: 709 [2019-11-06 22:12:36,872 INFO L226 Difference]: Without dead ends: 562 [2019-11-06 22:12:36,877 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:12:36,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2019-11-06 22:12:36,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 560. [2019-11-06 22:12:36,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2019-11-06 22:12:36,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 820 transitions. [2019-11-06 22:12:36,969 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 820 transitions. Word has length 139 [2019-11-06 22:12:36,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:36,970 INFO L462 AbstractCegarLoop]: Abstraction has 560 states and 820 transitions. [2019-11-06 22:12:36,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:12:36,970 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 820 transitions. [2019-11-06 22:12:36,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-11-06 22:12:36,973 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:36,973 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:12:36,974 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:36,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:36,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1903687668, now seen corresponding path program 1 times [2019-11-06 22:12:36,975 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:36,975 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318614742] [2019-11-06 22:12:36,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:37,360 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:12:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:37,424 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 22:12:37,424 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318614742] [2019-11-06 22:12:37,424 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:37,425 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:12:37,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639490504] [2019-11-06 22:12:37,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:12:37,427 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:37,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:12:37,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:12:37,428 INFO L87 Difference]: Start difference. First operand 560 states and 820 transitions. Second operand 4 states. [2019-11-06 22:12:37,690 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:12:39,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:39,778 INFO L93 Difference]: Finished difference Result 1135 states and 1718 transitions. [2019-11-06 22:12:39,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:12:39,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2019-11-06 22:12:39,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:39,791 INFO L225 Difference]: With dead ends: 1135 [2019-11-06 22:12:39,791 INFO L226 Difference]: Without dead ends: 934 [2019-11-06 22:12:39,795 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:12:39,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2019-11-06 22:12:39,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 932. [2019-11-06 22:12:39,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2019-11-06 22:12:39,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1389 transitions. [2019-11-06 22:12:39,864 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1389 transitions. Word has length 139 [2019-11-06 22:12:39,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:39,865 INFO L462 AbstractCegarLoop]: Abstraction has 932 states and 1389 transitions. [2019-11-06 22:12:39,865 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:12:39,866 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1389 transitions. [2019-11-06 22:12:39,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-11-06 22:12:39,868 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:39,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:12:39,869 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:39,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:39,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1903349044, now seen corresponding path program 1 times [2019-11-06 22:12:39,869 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:39,870 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788443096] [2019-11-06 22:12:39,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:40,371 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:12:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:40,408 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 22:12:40,408 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788443096] [2019-11-06 22:12:40,409 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:40,409 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:12:40,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483110204] [2019-11-06 22:12:40,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:12:40,410 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:40,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:12:40,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:12:40,411 INFO L87 Difference]: Start difference. First operand 932 states and 1389 transitions. Second operand 5 states. [2019-11-06 22:12:42,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:42,856 INFO L93 Difference]: Finished difference Result 2722 states and 4050 transitions. [2019-11-06 22:12:42,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:12:42,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2019-11-06 22:12:42,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:42,868 INFO L225 Difference]: With dead ends: 2722 [2019-11-06 22:12:42,868 INFO L226 Difference]: Without dead ends: 1803 [2019-11-06 22:12:42,874 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:12:42,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2019-11-06 22:12:42,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1761. [2019-11-06 22:12:42,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1761 states. [2019-11-06 22:12:42,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1761 states to 1761 states and 2610 transitions. [2019-11-06 22:12:42,995 INFO L78 Accepts]: Start accepts. Automaton has 1761 states and 2610 transitions. Word has length 139 [2019-11-06 22:12:42,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:42,996 INFO L462 AbstractCegarLoop]: Abstraction has 1761 states and 2610 transitions. [2019-11-06 22:12:42,996 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:12:42,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states and 2610 transitions. [2019-11-06 22:12:43,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-11-06 22:12:43,002 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:43,003 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:12:43,003 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:43,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:43,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1746903084, now seen corresponding path program 1 times [2019-11-06 22:12:43,004 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:43,004 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74254489] [2019-11-06 22:12:43,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:43,483 WARN L191 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:12:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:43,533 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 22:12:43,534 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74254489] [2019-11-06 22:12:43,534 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:43,535 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:12:43,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234728505] [2019-11-06 22:12:43,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:12:43,537 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:43,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:12:43,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:12:43,538 INFO L87 Difference]: Start difference. First operand 1761 states and 2610 transitions. Second operand 4 states. [2019-11-06 22:12:46,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:46,685 INFO L93 Difference]: Finished difference Result 5237 states and 7760 transitions. [2019-11-06 22:12:46,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:12:46,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2019-11-06 22:12:46,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:46,703 INFO L225 Difference]: With dead ends: 5237 [2019-11-06 22:12:46,704 INFO L226 Difference]: Without dead ends: 3508 [2019-11-06 22:12:46,708 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:12:46,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3508 states. [2019-11-06 22:12:46,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3508 to 1763. [2019-11-06 22:12:46,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2019-11-06 22:12:46,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2612 transitions. [2019-11-06 22:12:46,814 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2612 transitions. Word has length 140 [2019-11-06 22:12:46,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:46,814 INFO L462 AbstractCegarLoop]: Abstraction has 1763 states and 2612 transitions. [2019-11-06 22:12:46,814 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:12:46,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2612 transitions. [2019-11-06 22:12:46,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-06 22:12:46,819 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:46,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:12:46,819 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:46,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:46,820 INFO L82 PathProgramCache]: Analyzing trace with hash 2122749224, now seen corresponding path program 1 times [2019-11-06 22:12:46,820 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:46,821 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148549344] [2019-11-06 22:12:46,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:47,161 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:12:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:47,198 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 22:12:47,199 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148549344] [2019-11-06 22:12:47,199 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:47,199 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:12:47,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210398217] [2019-11-06 22:12:47,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:12:47,200 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:47,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:12:47,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:12:47,201 INFO L87 Difference]: Start difference. First operand 1763 states and 2612 transitions. Second operand 4 states. [2019-11-06 22:12:50,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:50,021 INFO L93 Difference]: Finished difference Result 4646 states and 6878 transitions. [2019-11-06 22:12:50,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:12:50,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2019-11-06 22:12:50,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:50,036 INFO L225 Difference]: With dead ends: 4646 [2019-11-06 22:12:50,037 INFO L226 Difference]: Without dead ends: 3051 [2019-11-06 22:12:50,041 INFO L630 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 [2019-11-06 22:12:50,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2019-11-06 22:12:50,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 3009. [2019-11-06 22:12:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3009 states. [2019-11-06 22:12:50,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3009 states to 3009 states and 4406 transitions. [2019-11-06 22:12:50,168 INFO L78 Accepts]: Start accepts. Automaton has 3009 states and 4406 transitions. Word has length 141 [2019-11-06 22:12:50,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:50,168 INFO L462 AbstractCegarLoop]: Abstraction has 3009 states and 4406 transitions. [2019-11-06 22:12:50,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:12:50,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3009 states and 4406 transitions. [2019-11-06 22:12:50,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-06 22:12:50,174 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:50,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:12:50,175 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:50,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:50,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1627018325, now seen corresponding path program 1 times [2019-11-06 22:12:50,176 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:50,177 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130102036] [2019-11-06 22:12:50,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:50,646 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:12:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:50,682 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 22:12:50,683 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130102036] [2019-11-06 22:12:50,684 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:50,684 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:12:50,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880034790] [2019-11-06 22:12:50,685 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:12:50,685 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:50,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:12:50,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:12:50,686 INFO L87 Difference]: Start difference. First operand 3009 states and 4406 transitions. Second operand 5 states. [2019-11-06 22:12:52,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:52,575 INFO L93 Difference]: Finished difference Result 6236 states and 9063 transitions. [2019-11-06 22:12:52,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:12:52,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2019-11-06 22:12:52,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:52,590 INFO L225 Difference]: With dead ends: 6236 [2019-11-06 22:12:52,591 INFO L226 Difference]: Without dead ends: 3185 [2019-11-06 22:12:52,598 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:12:52,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3185 states. [2019-11-06 22:12:52,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3185 to 3141. [2019-11-06 22:12:52,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3141 states. [2019-11-06 22:12:52,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 4541 transitions. [2019-11-06 22:12:52,733 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 4541 transitions. Word has length 141 [2019-11-06 22:12:52,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:52,734 INFO L462 AbstractCegarLoop]: Abstraction has 3141 states and 4541 transitions. [2019-11-06 22:12:52,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:12:52,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 4541 transitions. [2019-11-06 22:12:52,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-06 22:12:52,739 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:52,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:12:52,740 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:52,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:52,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1058765613, now seen corresponding path program 1 times [2019-11-06 22:12:52,741 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:52,741 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904404920] [2019-11-06 22:12:52,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:53,170 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:12:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:53,209 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 22:12:53,209 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904404920] [2019-11-06 22:12:53,209 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:53,210 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:12:53,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225589642] [2019-11-06 22:12:53,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:12:53,211 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:53,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:12:53,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:12:53,212 INFO L87 Difference]: Start difference. First operand 3141 states and 4541 transitions. Second operand 5 states. [2019-11-06 22:12:55,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:55,904 INFO L93 Difference]: Finished difference Result 9129 states and 13145 transitions. [2019-11-06 22:12:55,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:12:55,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2019-11-06 22:12:55,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:55,929 INFO L225 Difference]: With dead ends: 9129 [2019-11-06 22:12:55,930 INFO L226 Difference]: Without dead ends: 6060 [2019-11-06 22:12:55,936 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:12:55,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6060 states. [2019-11-06 22:12:56,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6060 to 6016. [2019-11-06 22:12:56,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6016 states. [2019-11-06 22:12:56,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6016 states to 6016 states and 8600 transitions. [2019-11-06 22:12:56,179 INFO L78 Accepts]: Start accepts. Automaton has 6016 states and 8600 transitions. Word has length 141 [2019-11-06 22:12:56,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:56,180 INFO L462 AbstractCegarLoop]: Abstraction has 6016 states and 8600 transitions. [2019-11-06 22:12:56,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:12:56,180 INFO L276 IsEmpty]: Start isEmpty. Operand 6016 states and 8600 transitions. [2019-11-06 22:12:56,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-11-06 22:12:56,192 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:56,192 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:12:56,193 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:56,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:56,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1467508373, now seen corresponding path program 1 times [2019-11-06 22:12:56,193 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:56,194 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972886122] [2019-11-06 22:12:56,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:56,457 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:12:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:56,484 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 22:12:56,484 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972886122] [2019-11-06 22:12:56,485 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:56,485 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:12:56,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418779895] [2019-11-06 22:12:56,486 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:12:56,486 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:56,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:12:56,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:12:56,487 INFO L87 Difference]: Start difference. First operand 6016 states and 8600 transitions. Second operand 4 states. [2019-11-06 22:12:58,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:58,307 INFO L93 Difference]: Finished difference Result 17854 states and 25496 transitions. [2019-11-06 22:12:58,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:12:58,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2019-11-06 22:12:58,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:58,366 INFO L225 Difference]: With dead ends: 17854 [2019-11-06 22:12:58,366 INFO L226 Difference]: Without dead ends: 11954 [2019-11-06 22:12:58,381 INFO L630 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 [2019-11-06 22:12:58,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11954 states. [2019-11-06 22:12:58,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11954 to 6028. [2019-11-06 22:12:58,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6028 states. [2019-11-06 22:12:58,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6028 states to 6028 states and 8612 transitions. [2019-11-06 22:12:58,718 INFO L78 Accepts]: Start accepts. Automaton has 6028 states and 8612 transitions. Word has length 142 [2019-11-06 22:12:58,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:58,718 INFO L462 AbstractCegarLoop]: Abstraction has 6028 states and 8612 transitions. [2019-11-06 22:12:58,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:12:58,718 INFO L276 IsEmpty]: Start isEmpty. Operand 6028 states and 8612 transitions. [2019-11-06 22:12:58,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-11-06 22:12:58,727 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:58,727 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:12:58,727 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:58,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:58,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1015908366, now seen corresponding path program 1 times [2019-11-06 22:12:58,728 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:58,728 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053418719] [2019-11-06 22:12:58,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:59,126 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:12:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:59,164 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 22:12:59,164 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053418719] [2019-11-06 22:12:59,164 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:59,164 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:12:59,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267924852] [2019-11-06 22:12:59,165 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:12:59,165 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:59,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:12:59,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:12:59,166 INFO L87 Difference]: Start difference. First operand 6028 states and 8612 transitions. Second operand 5 states. [2019-11-06 22:13:02,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:02,017 INFO L93 Difference]: Finished difference Result 17520 states and 24960 transitions. [2019-11-06 22:13:02,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:02,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2019-11-06 22:13:02,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:02,040 INFO L225 Difference]: With dead ends: 17520 [2019-11-06 22:13:02,040 INFO L226 Difference]: Without dead ends: 11618 [2019-11-06 22:13:02,052 INFO L630 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 [2019-11-06 22:13:02,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11618 states. [2019-11-06 22:13:02,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11618 to 11574. [2019-11-06 22:13:02,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11574 states. [2019-11-06 22:13:02,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11574 states to 11574 states and 16344 transitions. [2019-11-06 22:13:02,591 INFO L78 Accepts]: Start accepts. Automaton has 11574 states and 16344 transitions. Word has length 143 [2019-11-06 22:13:02,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:02,592 INFO L462 AbstractCegarLoop]: Abstraction has 11574 states and 16344 transitions. [2019-11-06 22:13:02,592 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:13:02,592 INFO L276 IsEmpty]: Start isEmpty. Operand 11574 states and 16344 transitions. [2019-11-06 22:13:02,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-06 22:13:02,607 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:02,607 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:13:02,608 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:02,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:02,608 INFO L82 PathProgramCache]: Analyzing trace with hash 152789353, now seen corresponding path program 1 times [2019-11-06 22:13:02,608 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:02,609 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955063571] [2019-11-06 22:13:02,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:02,944 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:13:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:02,983 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 22:13:02,983 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955063571] [2019-11-06 22:13:02,983 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:02,984 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:13:02,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328133555] [2019-11-06 22:13:02,984 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:13:02,984 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:02,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:13:02,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:02,985 INFO L87 Difference]: Start difference. First operand 11574 states and 16344 transitions. Second operand 5 states.