/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 --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 04:01:00,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 04:01:00,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 04:01:00,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 04:01:00,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 04:01:00,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 04:01:00,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 04:01:00,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 04:01:00,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 04:01:00,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 04:01:00,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 04:01:00,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 04:01:00,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 04:01:00,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 04:01:00,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 04:01:00,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 04:01:00,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 04:01:00,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 04:01:00,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 04:01:00,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 04:01:00,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 04:01:00,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 04:01:00,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 04:01:00,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 04:01:00,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 04:01:00,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 04:01:00,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 04:01:00,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 04:01:00,136 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 [2020-07-20 04:01:00,173 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 04:01:00,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 04:01:00,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 04:01:00,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 04:01:00,177 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 04:01:00,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 04:01:00,178 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 04:01:00,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 04:01:00,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 04:01:00,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 04:01:00,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 04:01:00,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 04:01:00,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 04:01:00,179 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 04:01:00,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 04:01:00,180 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 04:01:00,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 04:01:00,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 04:01:00,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 04:01:00,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 04:01:00,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 04:01:00,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 04:01:00,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 04:01:00,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 04:01:00,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 04:01:00,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 04:01:00,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 04:01:00,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 04:01:00,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 04:01:00,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 04:01:00,461 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 04:01:00,475 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 04:01:00,478 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 04:01:00,480 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 04:01:00,480 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 04:01:00,481 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-07-20 04:01:00,557 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab933824f/045cc8426c2141aaac5dc4f638290166/FLAG998ceb154 [2020-07-20 04:01:00,975 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 04:01:00,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-07-20 04:01:00,984 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab933824f/045cc8426c2141aaac5dc4f638290166/FLAG998ceb154 [2020-07-20 04:01:01,318 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab933824f/045cc8426c2141aaac5dc4f638290166 [2020-07-20 04:01:01,327 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 04:01:01,331 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 04:01:01,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 04:01:01,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 04:01:01,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 04:01:01,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:01:01" (1/1) ... [2020-07-20 04:01:01,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@640e2379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:01, skipping insertion in model container [2020-07-20 04:01:01,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:01:01" (1/1) ... [2020-07-20 04:01:01,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 04:01:01,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 04:01:01,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 04:01:01,543 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 04:01:01,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 04:01:01,572 INFO L208 MainTranslator]: Completed translation [2020-07-20 04:01:01,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:01 WrapperNode [2020-07-20 04:01:01,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 04:01:01,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 04:01:01,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 04:01:01,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 04:01:01,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:01" (1/1) ... [2020-07-20 04:01:01,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:01" (1/1) ... [2020-07-20 04:01:01,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:01" (1/1) ... [2020-07-20 04:01:01,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:01" (1/1) ... [2020-07-20 04:01:01,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:01" (1/1) ... [2020-07-20 04:01:01,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:01" (1/1) ... [2020-07-20 04:01:01,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:01" (1/1) ... [2020-07-20 04:01:01,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 04:01:01,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 04:01:01,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 04:01:01,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 04:01:01,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 04:01:01,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 04:01:01,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 04:01:01,741 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 04:01:01,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 04:01:01,741 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 04:01:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 04:01:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 04:01:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 04:01:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 04:01:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 04:01:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 04:01:01,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 04:01:01,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 04:01:01,978 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 04:01:01,978 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-20 04:01:01,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:01:01 BoogieIcfgContainer [2020-07-20 04:01:01,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 04:01:01,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 04:01:01,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 04:01:02,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 04:01:02,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:01:01" (1/3) ... [2020-07-20 04:01:02,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a946eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:01:02, skipping insertion in model container [2020-07-20 04:01:02,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:01" (2/3) ... [2020-07-20 04:01:02,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a946eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:01:02, skipping insertion in model container [2020-07-20 04:01:02,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:01:01" (3/3) ... [2020-07-20 04:01:02,012 INFO L109 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2020-07-20 04:01:02,033 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 04:01:02,041 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 04:01:02,057 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 04:01:02,088 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 04:01:02,088 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 04:01:02,088 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 04:01:02,089 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 04:01:02,089 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 04:01:02,089 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 04:01:02,089 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 04:01:02,089 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 04:01:02,110 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-20 04:01:02,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 04:01:02,117 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:02,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:02,119 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:02,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:02,126 INFO L82 PathProgramCache]: Analyzing trace with hash 317368997, now seen corresponding path program 1 times [2020-07-20 04:01:02,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:02,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974303968] [2020-07-20 04:01:02,135 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 04:01:02,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974303968] [2020-07-20 04:01:02,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:01:02,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 04:01:02,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907940725] [2020-07-20 04:01:02,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 04:01:02,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:02,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 04:01:02,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 04:01:02,277 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-07-20 04:01:02,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:02,314 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2020-07-20 04:01:02,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 04:01:02,316 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-07-20 04:01:02,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:02,328 INFO L225 Difference]: With dead ends: 47 [2020-07-20 04:01:02,328 INFO L226 Difference]: Without dead ends: 22 [2020-07-20 04:01:02,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 04:01:02,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-20 04:01:02,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-20 04:01:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 04:01:02,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-07-20 04:01:02,399 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 15 [2020-07-20 04:01:02,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:02,400 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-07-20 04:01:02,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 04:01:02,400 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-07-20 04:01:02,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 04:01:02,401 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:02,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:02,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 04:01:02,402 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:02,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:02,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1632722591, now seen corresponding path program 1 times [2020-07-20 04:01:02,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:02,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761500458] [2020-07-20 04:01:02,404 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 04:01:02,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761500458] [2020-07-20 04:01:02,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:01:02,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 04:01:02,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105890922] [2020-07-20 04:01:02,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 04:01:02,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:02,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 04:01:02,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 04:01:02,536 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2020-07-20 04:01:02,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:02,600 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-07-20 04:01:02,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 04:01:02,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-20 04:01:02,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:02,602 INFO L225 Difference]: With dead ends: 31 [2020-07-20 04:01:02,602 INFO L226 Difference]: Without dead ends: 29 [2020-07-20 04:01:02,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 04:01:02,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-20 04:01:02,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-07-20 04:01:02,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-20 04:01:02,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-07-20 04:01:02,613 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2020-07-20 04:01:02,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:02,614 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-07-20 04:01:02,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 04:01:02,614 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-07-20 04:01:02,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 04:01:02,615 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:02,615 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:02,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 04:01:02,616 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:02,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:02,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1401298672, now seen corresponding path program 1 times [2020-07-20 04:01:02,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:02,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023275605] [2020-07-20 04:01:02,618 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:02,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 04:01:02,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023275605] [2020-07-20 04:01:02,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:01:02,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 04:01:02,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118033970] [2020-07-20 04:01:02,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 04:01:02,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:02,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 04:01:02,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 04:01:02,704 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-07-20 04:01:02,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:02,827 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2020-07-20 04:01:02,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 04:01:02,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-07-20 04:01:02,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:02,832 INFO L225 Difference]: With dead ends: 49 [2020-07-20 04:01:02,832 INFO L226 Difference]: Without dead ends: 34 [2020-07-20 04:01:02,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 04:01:02,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-20 04:01:02,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2020-07-20 04:01:02,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-20 04:01:02,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-20 04:01:02,850 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-07-20 04:01:02,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:02,851 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-20 04:01:02,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 04:01:02,851 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-20 04:01:02,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 04:01:02,852 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:02,852 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:02,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 04:01:02,853 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:02,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:02,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1107622837, now seen corresponding path program 1 times [2020-07-20 04:01:02,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:02,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828068895] [2020-07-20 04:01:02,855 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:02,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 04:01:02,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828068895] [2020-07-20 04:01:02,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466762207] [2020-07-20 04:01:02,939 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1e13c89d No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:02,997 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1e13c89d issued 3 check-sat command(s) [2020-07-20 04:01:02,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:03,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 04:01:03,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:03,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 04:01:03,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:03,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-20 04:01:03,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569033087] [2020-07-20 04:01:03,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 04:01:03,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:03,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 04:01:03,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-20 04:01:03,087 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 8 states. [2020-07-20 04:01:03,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:03,207 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-07-20 04:01:03,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 04:01:03,208 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-07-20 04:01:03,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:03,209 INFO L225 Difference]: With dead ends: 55 [2020-07-20 04:01:03,209 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 04:01:03,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-20 04:01:03,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 04:01:03,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2020-07-20 04:01:03,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-20 04:01:03,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-07-20 04:01:03,218 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 27 [2020-07-20 04:01:03,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:03,219 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-07-20 04:01:03,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 04:01:03,219 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-07-20 04:01:03,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 04:01:03,220 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:03,220 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:03,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:03,434 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:03,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:03,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1590427366, now seen corresponding path program 2 times [2020-07-20 04:01:03,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:03,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549473172] [2020-07-20 04:01:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:03,579 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 04:01:03,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549473172] [2020-07-20 04:01:03,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742079251] [2020-07-20 04:01:03,580 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@68a7585d No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:03,618 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@68a7585d issued 4 check-sat command(s) [2020-07-20 04:01:03,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:03,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 04:01:03,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:03,638 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:01:03,668 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 04:01:03,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:03,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-07-20 04:01:03,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486372760] [2020-07-20 04:01:03,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 04:01:03,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:03,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 04:01:03,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-20 04:01:03,671 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 9 states. [2020-07-20 04:01:03,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:03,746 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2020-07-20 04:01:03,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 04:01:03,747 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-07-20 04:01:03,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:03,748 INFO L225 Difference]: With dead ends: 47 [2020-07-20 04:01:03,749 INFO L226 Difference]: Without dead ends: 45 [2020-07-20 04:01:03,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-07-20 04:01:03,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-20 04:01:03,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-07-20 04:01:03,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 04:01:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-07-20 04:01:03,758 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 29 [2020-07-20 04:01:03,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:03,759 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-07-20 04:01:03,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 04:01:03,759 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-07-20 04:01:03,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 04:01:03,761 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:03,762 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:03,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:03,976 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:03,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:03,977 INFO L82 PathProgramCache]: Analyzing trace with hash -30298372, now seen corresponding path program 3 times [2020-07-20 04:01:03,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:03,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164950888] [2020-07-20 04:01:03,979 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:04,098 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 04:01:04,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164950888] [2020-07-20 04:01:04,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483891735] [2020-07-20 04:01:04,099 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@44e9ceb6 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:04,160 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@44e9ceb6 issued 3 check-sat command(s) [2020-07-20 04:01:04,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:04,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 04:01:04,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:04,240 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-20 04:01:04,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:04,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2020-07-20 04:01:04,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681695869] [2020-07-20 04:01:04,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 04:01:04,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:04,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 04:01:04,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-07-20 04:01:04,243 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 12 states. [2020-07-20 04:01:04,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:04,367 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2020-07-20 04:01:04,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 04:01:04,369 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-07-20 04:01:04,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:04,371 INFO L225 Difference]: With dead ends: 83 [2020-07-20 04:01:04,371 INFO L226 Difference]: Without dead ends: 58 [2020-07-20 04:01:04,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-07-20 04:01:04,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-20 04:01:04,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2020-07-20 04:01:04,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-20 04:01:04,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-07-20 04:01:04,382 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 45 [2020-07-20 04:01:04,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:04,382 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-07-20 04:01:04,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 04:01:04,383 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-07-20 04:01:04,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 04:01:04,384 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:04,384 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:04,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:04,598 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:04,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:04,600 INFO L82 PathProgramCache]: Analyzing trace with hash 130155809, now seen corresponding path program 4 times [2020-07-20 04:01:04,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:04,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453217067] [2020-07-20 04:01:04,601 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:04,790 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 04:01:04,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453217067] [2020-07-20 04:01:04,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394339668] [2020-07-20 04:01:04,791 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5dcd785d No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:04,837 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5dcd785d issued 3 check-sat command(s) [2020-07-20 04:01:04,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:04,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 04:01:04,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 04:01:04,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:04,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2020-07-20 04:01:04,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8717581] [2020-07-20 04:01:04,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 04:01:04,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:04,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 04:01:04,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-07-20 04:01:04,948 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 14 states. [2020-07-20 04:01:05,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:05,140 INFO L93 Difference]: Finished difference Result 87 states and 103 transitions. [2020-07-20 04:01:05,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 04:01:05,141 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-07-20 04:01:05,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:05,142 INFO L225 Difference]: With dead ends: 87 [2020-07-20 04:01:05,142 INFO L226 Difference]: Without dead ends: 64 [2020-07-20 04:01:05,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-07-20 04:01:05,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-20 04:01:05,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2020-07-20 04:01:05,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-20 04:01:05,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-07-20 04:01:05,151 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 47 [2020-07-20 04:01:05,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:05,152 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-07-20 04:01:05,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 04:01:05,152 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-07-20 04:01:05,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-07-20 04:01:05,153 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:05,154 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:05,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:05,368 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:05,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:05,369 INFO L82 PathProgramCache]: Analyzing trace with hash -292198906, now seen corresponding path program 5 times [2020-07-20 04:01:05,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:05,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720190949] [2020-07-20 04:01:05,370 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:05,464 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 04:01:05,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720190949] [2020-07-20 04:01:05,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887413442] [2020-07-20 04:01:05,465 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39a74dba No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:05,521 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39a74dba issued 4 check-sat command(s) [2020-07-20 04:01:05,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:05,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 04:01:05,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:05,537 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:01:05,557 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 04:01:05,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:05,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-07-20 04:01:05,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092900837] [2020-07-20 04:01:05,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 04:01:05,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:05,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 04:01:05,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-07-20 04:01:05,559 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 11 states. [2020-07-20 04:01:05,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:05,649 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-07-20 04:01:05,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 04:01:05,650 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-07-20 04:01:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:05,651 INFO L225 Difference]: With dead ends: 63 [2020-07-20 04:01:05,651 INFO L226 Difference]: Without dead ends: 61 [2020-07-20 04:01:05,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-07-20 04:01:05,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-20 04:01:05,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-07-20 04:01:05,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-20 04:01:05,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-07-20 04:01:05,660 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 49 [2020-07-20 04:01:05,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:05,661 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-07-20 04:01:05,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 04:01:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-07-20 04:01:05,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-20 04:01:05,662 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:05,663 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:05,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:05,876 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:05,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:05,876 INFO L82 PathProgramCache]: Analyzing trace with hash 551795688, now seen corresponding path program 6 times [2020-07-20 04:01:05,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:05,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445722867] [2020-07-20 04:01:05,877 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:06,042 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-20 04:01:06,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445722867] [2020-07-20 04:01:06,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648227834] [2020-07-20 04:01:06,043 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@319e8781 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:06,125 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@319e8781 issued 3 check-sat command(s) [2020-07-20 04:01:06,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:06,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 04:01:06,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:06,287 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 72 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-07-20 04:01:06,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:06,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 18 [2020-07-20 04:01:06,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375290668] [2020-07-20 04:01:06,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-20 04:01:06,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:06,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-20 04:01:06,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-07-20 04:01:06,292 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 18 states. [2020-07-20 04:01:06,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:06,479 INFO L93 Difference]: Finished difference Result 115 states and 135 transitions. [2020-07-20 04:01:06,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 04:01:06,479 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 65 [2020-07-20 04:01:06,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:06,481 INFO L225 Difference]: With dead ends: 115 [2020-07-20 04:01:06,481 INFO L226 Difference]: Without dead ends: 82 [2020-07-20 04:01:06,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-07-20 04:01:06,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-20 04:01:06,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 62. [2020-07-20 04:01:06,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-20 04:01:06,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2020-07-20 04:01:06,491 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 65 [2020-07-20 04:01:06,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:06,491 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2020-07-20 04:01:06,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-20 04:01:06,492 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2020-07-20 04:01:06,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-07-20 04:01:06,493 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:06,493 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:06,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:06,708 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:06,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:06,709 INFO L82 PathProgramCache]: Analyzing trace with hash -150434419, now seen corresponding path program 7 times [2020-07-20 04:01:06,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:06,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454526336] [2020-07-20 04:01:06,710 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:06,860 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 60 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-20 04:01:06,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454526336] [2020-07-20 04:01:06,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582168511] [2020-07-20 04:01:06,861 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5d4fc600 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:06,928 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5d4fc600 issued 3 check-sat command(s) [2020-07-20 04:01:06,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:06,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 04:01:06,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:07,064 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 60 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-20 04:01:07,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:07,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2020-07-20 04:01:07,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356519351] [2020-07-20 04:01:07,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-20 04:01:07,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:07,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-20 04:01:07,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-07-20 04:01:07,067 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand 20 states. [2020-07-20 04:01:07,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:07,344 INFO L93 Difference]: Finished difference Result 119 states and 142 transitions. [2020-07-20 04:01:07,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 04:01:07,344 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-07-20 04:01:07,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:07,346 INFO L225 Difference]: With dead ends: 119 [2020-07-20 04:01:07,346 INFO L226 Difference]: Without dead ends: 88 [2020-07-20 04:01:07,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-07-20 04:01:07,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-07-20 04:01:07,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 64. [2020-07-20 04:01:07,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-20 04:01:07,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2020-07-20 04:01:07,356 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 67 [2020-07-20 04:01:07,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:07,356 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2020-07-20 04:01:07,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-20 04:01:07,356 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2020-07-20 04:01:07,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-07-20 04:01:07,358 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:07,358 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:07,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-20 04:01:07,574 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:07,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:07,575 INFO L82 PathProgramCache]: Analyzing trace with hash -683701774, now seen corresponding path program 8 times [2020-07-20 04:01:07,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:07,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419707706] [2020-07-20 04:01:07,576 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:07,679 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 52 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-20 04:01:07,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419707706] [2020-07-20 04:01:07,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120853240] [2020-07-20 04:01:07,680 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1de4edfa No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:07,726 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1de4edfa issued 4 check-sat command(s) [2020-07-20 04:01:07,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:07,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 04:01:07,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:07,744 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:01:07,777 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 52 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-20 04:01:07,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:07,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-07-20 04:01:07,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952681421] [2020-07-20 04:01:07,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 04:01:07,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:07,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 04:01:07,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-07-20 04:01:07,782 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand 13 states. [2020-07-20 04:01:07,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:07,868 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2020-07-20 04:01:07,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 04:01:07,869 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-07-20 04:01:07,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:07,871 INFO L225 Difference]: With dead ends: 79 [2020-07-20 04:01:07,872 INFO L226 Difference]: Without dead ends: 77 [2020-07-20 04:01:07,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-07-20 04:01:07,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-07-20 04:01:07,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-07-20 04:01:07,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-20 04:01:07,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2020-07-20 04:01:07,894 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 69 [2020-07-20 04:01:07,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:07,894 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2020-07-20 04:01:07,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 04:01:07,894 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2020-07-20 04:01:07,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-07-20 04:01:07,896 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:07,896 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:08,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-07-20 04:01:08,100 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:08,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:08,100 INFO L82 PathProgramCache]: Analyzing trace with hash 192972756, now seen corresponding path program 9 times [2020-07-20 04:01:08,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:08,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780136833] [2020-07-20 04:01:08,101 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 112 proven. 42 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-20 04:01:08,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780136833] [2020-07-20 04:01:08,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745320] [2020-07-20 04:01:08,303 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5ffa5d82 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:08,360 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5ffa5d82 issued 3 check-sat command(s) [2020-07-20 04:01:08,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:08,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-20 04:01:08,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:08,577 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 132 proven. 42 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-07-20 04:01:08,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:08,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 24 [2020-07-20 04:01:08,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911008592] [2020-07-20 04:01:08,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-20 04:01:08,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:08,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-20 04:01:08,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-07-20 04:01:08,579 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 24 states. [2020-07-20 04:01:08,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:08,857 INFO L93 Difference]: Finished difference Result 147 states and 174 transitions. [2020-07-20 04:01:08,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 04:01:08,857 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 85 [2020-07-20 04:01:08,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:08,859 INFO L225 Difference]: With dead ends: 147 [2020-07-20 04:01:08,859 INFO L226 Difference]: Without dead ends: 106 [2020-07-20 04:01:08,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=262, Invalid=668, Unknown=0, NotChecked=0, Total=930 [2020-07-20 04:01:08,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-07-20 04:01:08,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 78. [2020-07-20 04:01:08,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-07-20 04:01:08,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2020-07-20 04:01:08,868 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 85 [2020-07-20 04:01:08,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:08,868 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2020-07-20 04:01:08,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-20 04:01:08,869 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2020-07-20 04:01:08,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-07-20 04:01:08,870 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:08,870 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:09,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:09,085 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:09,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:09,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1722356985, now seen corresponding path program 10 times [2020-07-20 04:01:09,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:09,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694628841] [2020-07-20 04:01:09,087 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:09,292 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 112 proven. 56 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-20 04:01:09,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694628841] [2020-07-20 04:01:09,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172125584] [2020-07-20 04:01:09,292 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@78a5b755 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:09,341 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@78a5b755 issued 3 check-sat command(s) [2020-07-20 04:01:09,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:09,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-20 04:01:09,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:09,577 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 112 proven. 56 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-20 04:01:09,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:09,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 26 [2020-07-20 04:01:09,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975811932] [2020-07-20 04:01:09,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-20 04:01:09,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:09,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-20 04:01:09,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2020-07-20 04:01:09,580 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand 26 states. [2020-07-20 04:01:09,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:09,907 INFO L93 Difference]: Finished difference Result 151 states and 181 transitions. [2020-07-20 04:01:09,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-20 04:01:09,907 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 87 [2020-07-20 04:01:09,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:09,909 INFO L225 Difference]: With dead ends: 151 [2020-07-20 04:01:09,909 INFO L226 Difference]: Without dead ends: 112 [2020-07-20 04:01:09,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2020-07-20 04:01:09,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-07-20 04:01:09,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 80. [2020-07-20 04:01:09,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-20 04:01:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2020-07-20 04:01:09,918 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 87 [2020-07-20 04:01:09,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:09,918 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2020-07-20 04:01:09,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-20 04:01:09,918 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2020-07-20 04:01:09,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-07-20 04:01:09,919 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:09,919 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:10,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:10,129 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:10,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:10,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1713181474, now seen corresponding path program 11 times [2020-07-20 04:01:10,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:10,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960854259] [2020-07-20 04:01:10,130 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:10,276 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 86 proven. 98 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-20 04:01:10,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960854259] [2020-07-20 04:01:10,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022565608] [2020-07-20 04:01:10,277 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5b4d0fee No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:10,341 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5b4d0fee issued 4 check-sat command(s) [2020-07-20 04:01:10,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:10,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-20 04:01:10,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:10,382 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:01:10,414 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 86 proven. 98 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-20 04:01:10,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:10,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-07-20 04:01:10,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766501379] [2020-07-20 04:01:10,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-20 04:01:10,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:10,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-20 04:01:10,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-07-20 04:01:10,423 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand 15 states. [2020-07-20 04:01:10,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:10,554 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2020-07-20 04:01:10,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 04:01:10,555 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-07-20 04:01:10,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:10,557 INFO L225 Difference]: With dead ends: 95 [2020-07-20 04:01:10,557 INFO L226 Difference]: Without dead ends: 93 [2020-07-20 04:01:10,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-07-20 04:01:10,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-07-20 04:01:10,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2020-07-20 04:01:10,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-07-20 04:01:10,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2020-07-20 04:01:10,567 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 89 [2020-07-20 04:01:10,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:10,568 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2020-07-20 04:01:10,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-20 04:01:10,569 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2020-07-20 04:01:10,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-07-20 04:01:10,570 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:10,571 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:10,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-07-20 04:01:10,785 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:10,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:10,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1950838080, now seen corresponding path program 12 times [2020-07-20 04:01:10,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:10,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805194384] [2020-07-20 04:01:10,786 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:11,146 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 180 proven. 72 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-07-20 04:01:11,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805194384] [2020-07-20 04:01:11,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757653825] [2020-07-20 04:01:11,147 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@643cd637 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:11,222 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@643cd637 issued 3 check-sat command(s) [2020-07-20 04:01:11,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:11,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-20 04:01:11,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:11,497 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 208 proven. 72 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-07-20 04:01:11,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:11,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 30 [2020-07-20 04:01:11,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559051238] [2020-07-20 04:01:11,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-20 04:01:11,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:11,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-20 04:01:11,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2020-07-20 04:01:11,501 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand 30 states. [2020-07-20 04:01:11,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:11,865 INFO L93 Difference]: Finished difference Result 179 states and 213 transitions. [2020-07-20 04:01:11,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-20 04:01:11,865 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 105 [2020-07-20 04:01:11,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:11,866 INFO L225 Difference]: With dead ends: 179 [2020-07-20 04:01:11,866 INFO L226 Difference]: Without dead ends: 130 [2020-07-20 04:01:11,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=1074, Unknown=0, NotChecked=0, Total=1482 [2020-07-20 04:01:11,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-07-20 04:01:11,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 94. [2020-07-20 04:01:11,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-07-20 04:01:11,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2020-07-20 04:01:11,875 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 105 [2020-07-20 04:01:11,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:11,875 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2020-07-20 04:01:11,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-20 04:01:11,875 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2020-07-20 04:01:11,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-07-20 04:01:11,877 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:11,877 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:12,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-07-20 04:01:12,091 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:12,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:12,092 INFO L82 PathProgramCache]: Analyzing trace with hash -734782619, now seen corresponding path program 13 times [2020-07-20 04:01:12,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:12,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069083966] [2020-07-20 04:01:12,093 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:12,369 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 180 proven. 90 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-07-20 04:01:12,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069083966] [2020-07-20 04:01:12,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488620387] [2020-07-20 04:01:12,370 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@21990e7 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:12,433 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@21990e7 issued 3 check-sat command(s) [2020-07-20 04:01:12,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:12,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-20 04:01:12,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 180 proven. 90 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-07-20 04:01:12,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:12,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 32 [2020-07-20 04:01:12,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945389742] [2020-07-20 04:01:12,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-07-20 04:01:12,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:12,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-07-20 04:01:12,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=741, Unknown=0, NotChecked=0, Total=992 [2020-07-20 04:01:12,729 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand 32 states. [2020-07-20 04:01:13,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:13,174 INFO L93 Difference]: Finished difference Result 183 states and 220 transitions. [2020-07-20 04:01:13,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-20 04:01:13,174 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 107 [2020-07-20 04:01:13,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:13,177 INFO L225 Difference]: With dead ends: 183 [2020-07-20 04:01:13,178 INFO L226 Difference]: Without dead ends: 136 [2020-07-20 04:01:13,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=481, Invalid=1241, Unknown=0, NotChecked=0, Total=1722 [2020-07-20 04:01:13,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-20 04:01:13,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 96. [2020-07-20 04:01:13,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-07-20 04:01:13,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2020-07-20 04:01:13,192 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 107 [2020-07-20 04:01:13,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:13,192 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2020-07-20 04:01:13,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-07-20 04:01:13,192 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2020-07-20 04:01:13,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-07-20 04:01:13,194 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:13,194 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:13,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-07-20 04:01:13,401 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:13,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:13,402 INFO L82 PathProgramCache]: Analyzing trace with hash -336589110, now seen corresponding path program 14 times [2020-07-20 04:01:13,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:13,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205170212] [2020-07-20 04:01:13,403 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:13,598 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 128 proven. 162 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-07-20 04:01:13,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205170212] [2020-07-20 04:01:13,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738388026] [2020-07-20 04:01:13,600 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@326db1bb No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:13,715 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@326db1bb issued 4 check-sat command(s) [2020-07-20 04:01:13,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:13,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 04:01:13,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:13,757 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:01:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 128 proven. 162 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-07-20 04:01:13,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:13,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-07-20 04:01:13,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358031130] [2020-07-20 04:01:13,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-20 04:01:13,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:13,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-20 04:01:13,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-07-20 04:01:13,821 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 17 states. [2020-07-20 04:01:13,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:13,975 INFO L93 Difference]: Finished difference Result 111 states and 119 transitions. [2020-07-20 04:01:13,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 04:01:13,975 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 109 [2020-07-20 04:01:13,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:13,977 INFO L225 Difference]: With dead ends: 111 [2020-07-20 04:01:13,978 INFO L226 Difference]: Without dead ends: 109 [2020-07-20 04:01:13,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2020-07-20 04:01:13,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-20 04:01:13,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2020-07-20 04:01:13,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-07-20 04:01:13,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2020-07-20 04:01:13,998 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 109 [2020-07-20 04:01:13,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:13,999 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2020-07-20 04:01:13,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-20 04:01:13,999 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2020-07-20 04:01:14,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-07-20 04:01:14,002 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:14,003 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:14,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:14,217 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:14,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:14,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1711037612, now seen corresponding path program 15 times [2020-07-20 04:01:14,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:14,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886167672] [2020-07-20 04:01:14,218 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 264 proven. 110 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-20 04:01:14,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886167672] [2020-07-20 04:01:14,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935035212] [2020-07-20 04:01:14,719 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2465331 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:14,821 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2465331 issued 3 check-sat command(s) [2020-07-20 04:01:14,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:14,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-20 04:01:14,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:15,157 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 300 proven. 110 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2020-07-20 04:01:15,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:15,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 36 [2020-07-20 04:01:15,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650366868] [2020-07-20 04:01:15,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-07-20 04:01:15,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:15,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-07-20 04:01:15,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2020-07-20 04:01:15,160 INFO L87 Difference]: Start difference. First operand 108 states and 116 transitions. Second operand 36 states. [2020-07-20 04:01:15,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:15,642 INFO L93 Difference]: Finished difference Result 211 states and 252 transitions. [2020-07-20 04:01:15,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-20 04:01:15,643 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 125 [2020-07-20 04:01:15,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:15,644 INFO L225 Difference]: With dead ends: 211 [2020-07-20 04:01:15,645 INFO L226 Difference]: Without dead ends: 154 [2020-07-20 04:01:15,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=586, Invalid=1576, Unknown=0, NotChecked=0, Total=2162 [2020-07-20 04:01:15,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-07-20 04:01:15,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 110. [2020-07-20 04:01:15,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-07-20 04:01:15,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2020-07-20 04:01:15,655 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 125 [2020-07-20 04:01:15,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:15,655 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2020-07-20 04:01:15,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-07-20 04:01:15,655 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2020-07-20 04:01:15,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-07-20 04:01:15,657 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:15,657 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:15,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-07-20 04:01:15,872 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:15,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:15,873 INFO L82 PathProgramCache]: Analyzing trace with hash 66724049, now seen corresponding path program 16 times [2020-07-20 04:01:15,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:15,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849109621] [2020-07-20 04:01:15,874 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:16,249 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 264 proven. 132 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-20 04:01:16,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849109621] [2020-07-20 04:01:16,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340352010] [2020-07-20 04:01:16,250 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1e1b5670 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:16,351 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1e1b5670 issued 3 check-sat command(s) [2020-07-20 04:01:16,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:16,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-20 04:01:16,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 264 proven. 132 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-20 04:01:16,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:16,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 38 [2020-07-20 04:01:16,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376526473] [2020-07-20 04:01:16,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-07-20 04:01:16,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:16,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-07-20 04:01:16,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1057, Unknown=0, NotChecked=0, Total=1406 [2020-07-20 04:01:16,781 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 38 states. [2020-07-20 04:01:17,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:17,308 INFO L93 Difference]: Finished difference Result 215 states and 259 transitions. [2020-07-20 04:01:17,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-20 04:01:17,308 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 127 [2020-07-20 04:01:17,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:17,310 INFO L225 Difference]: With dead ends: 215 [2020-07-20 04:01:17,311 INFO L226 Difference]: Without dead ends: 160 [2020-07-20 04:01:17,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2020-07-20 04:01:17,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-07-20 04:01:17,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 112. [2020-07-20 04:01:17,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-07-20 04:01:17,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 120 transitions. [2020-07-20 04:01:17,323 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 120 transitions. Word has length 127 [2020-07-20 04:01:17,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:17,324 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 120 transitions. [2020-07-20 04:01:17,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-07-20 04:01:17,324 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 120 transitions. [2020-07-20 04:01:17,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-07-20 04:01:17,326 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:17,326 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:17,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:17,541 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:17,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:17,541 INFO L82 PathProgramCache]: Analyzing trace with hash 429354934, now seen corresponding path program 17 times [2020-07-20 04:01:17,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:17,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74930440] [2020-07-20 04:01:17,542 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 178 proven. 242 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-20 04:01:17,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74930440] [2020-07-20 04:01:17,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190953988] [2020-07-20 04:01:17,766 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6bee85e5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:17,860 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6bee85e5 issued 4 check-sat command(s) [2020-07-20 04:01:17,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:17,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-20 04:01:17,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:17,887 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:01:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 178 proven. 242 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-20 04:01:17,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:17,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-07-20 04:01:17,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232904463] [2020-07-20 04:01:17,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-20 04:01:17,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:17,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-20 04:01:17,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-07-20 04:01:17,930 INFO L87 Difference]: Start difference. First operand 112 states and 120 transitions. Second operand 19 states. [2020-07-20 04:01:18,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:18,126 INFO L93 Difference]: Finished difference Result 127 states and 136 transitions. [2020-07-20 04:01:18,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-20 04:01:18,127 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 129 [2020-07-20 04:01:18,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:18,129 INFO L225 Difference]: With dead ends: 127 [2020-07-20 04:01:18,129 INFO L226 Difference]: Without dead ends: 125 [2020-07-20 04:01:18,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2020-07-20 04:01:18,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-07-20 04:01:18,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2020-07-20 04:01:18,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-07-20 04:01:18,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 133 transitions. [2020-07-20 04:01:18,143 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 133 transitions. Word has length 129 [2020-07-20 04:01:18,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:18,143 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 133 transitions. [2020-07-20 04:01:18,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-20 04:01:18,144 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 133 transitions. [2020-07-20 04:01:18,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-07-20 04:01:18,145 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:18,145 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:18,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:18,361 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:18,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:18,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1971086744, now seen corresponding path program 18 times [2020-07-20 04:01:18,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:18,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055069713] [2020-07-20 04:01:18,361 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:18,851 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 364 proven. 156 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-07-20 04:01:18,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055069713] [2020-07-20 04:01:18,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929476588] [2020-07-20 04:01:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@366a5cf5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:18,931 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@366a5cf5 issued 3 check-sat command(s) [2020-07-20 04:01:18,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:18,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-20 04:01:18,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 408 proven. 156 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2020-07-20 04:01:19,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:19,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 42 [2020-07-20 04:01:19,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94251512] [2020-07-20 04:01:19,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-07-20 04:01:19,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:19,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-07-20 04:01:19,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1303, Unknown=0, NotChecked=0, Total=1722 [2020-07-20 04:01:19,433 INFO L87 Difference]: Start difference. First operand 124 states and 133 transitions. Second operand 42 states. [2020-07-20 04:01:20,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:20,028 INFO L93 Difference]: Finished difference Result 243 states and 291 transitions. [2020-07-20 04:01:20,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-20 04:01:20,028 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 145 [2020-07-20 04:01:20,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:20,030 INFO L225 Difference]: With dead ends: 243 [2020-07-20 04:01:20,030 INFO L226 Difference]: Without dead ends: 178 [2020-07-20 04:01:20,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=796, Invalid=2174, Unknown=0, NotChecked=0, Total=2970 [2020-07-20 04:01:20,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-07-20 04:01:20,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 126. [2020-07-20 04:01:20,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-20 04:01:20,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 135 transitions. [2020-07-20 04:01:20,040 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 135 transitions. Word has length 145 [2020-07-20 04:01:20,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:20,041 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 135 transitions. [2020-07-20 04:01:20,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-07-20 04:01:20,041 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 135 transitions. [2020-07-20 04:01:20,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-07-20 04:01:20,042 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:20,042 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:20,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-07-20 04:01:20,256 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:20,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:20,256 INFO L82 PathProgramCache]: Analyzing trace with hash 554411325, now seen corresponding path program 19 times [2020-07-20 04:01:20,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:20,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043442543] [2020-07-20 04:01:20,256 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 364 proven. 182 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-07-20 04:01:20,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043442543] [2020-07-20 04:01:20,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237305294] [2020-07-20 04:01:20,726 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@526b97a0 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:20,791 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@526b97a0 issued 3 check-sat command(s) [2020-07-20 04:01:20,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:20,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 30 conjunts are in the unsatisfiable core [2020-07-20 04:01:20,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:21,326 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 364 proven. 182 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-07-20 04:01:21,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:21,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 44 [2020-07-20 04:01:21,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757782553] [2020-07-20 04:01:21,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-07-20 04:01:21,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:21,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-07-20 04:01:21,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1429, Unknown=0, NotChecked=0, Total=1892 [2020-07-20 04:01:21,330 INFO L87 Difference]: Start difference. First operand 126 states and 135 transitions. Second operand 44 states. [2020-07-20 04:01:22,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:22,037 INFO L93 Difference]: Finished difference Result 247 states and 298 transitions. [2020-07-20 04:01:22,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-20 04:01:22,037 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 147 [2020-07-20 04:01:22,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:22,039 INFO L225 Difference]: With dead ends: 247 [2020-07-20 04:01:22,039 INFO L226 Difference]: Without dead ends: 184 [2020-07-20 04:01:22,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=897, Invalid=2409, Unknown=0, NotChecked=0, Total=3306 [2020-07-20 04:01:22,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-07-20 04:01:22,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 128. [2020-07-20 04:01:22,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-20 04:01:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 137 transitions. [2020-07-20 04:01:22,049 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 137 transitions. Word has length 147 [2020-07-20 04:01:22,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:22,050 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 137 transitions. [2020-07-20 04:01:22,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-07-20 04:01:22,050 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 137 transitions. [2020-07-20 04:01:22,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-07-20 04:01:22,051 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:22,051 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:22,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:22,265 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:22,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:22,265 INFO L82 PathProgramCache]: Analyzing trace with hash 633966498, now seen corresponding path program 20 times [2020-07-20 04:01:22,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:22,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146446073] [2020-07-20 04:01:22,265 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:22,519 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 236 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-07-20 04:01:22,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146446073] [2020-07-20 04:01:22,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235978961] [2020-07-20 04:01:22,520 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@21ac040a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:22,612 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@21ac040a issued 4 check-sat command(s) [2020-07-20 04:01:22,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:22,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 31 conjunts are in the unsatisfiable core [2020-07-20 04:01:22,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:22,632 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:01:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 236 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-07-20 04:01:22,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:22,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-07-20 04:01:22,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982534325] [2020-07-20 04:01:22,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-20 04:01:22,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:22,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-20 04:01:22,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=274, Unknown=0, NotChecked=0, Total=420 [2020-07-20 04:01:22,705 INFO L87 Difference]: Start difference. First operand 128 states and 137 transitions. Second operand 21 states. [2020-07-20 04:01:22,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:22,968 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2020-07-20 04:01:22,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-20 04:01:22,969 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 149 [2020-07-20 04:01:22,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:22,971 INFO L225 Difference]: With dead ends: 143 [2020-07-20 04:01:22,971 INFO L226 Difference]: Without dead ends: 141 [2020-07-20 04:01:22,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2020-07-20 04:01:22,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-07-20 04:01:22,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2020-07-20 04:01:22,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-20 04:01:22,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 150 transitions. [2020-07-20 04:01:22,981 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 150 transitions. Word has length 149 [2020-07-20 04:01:22,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:22,982 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 150 transitions. [2020-07-20 04:01:22,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-20 04:01:22,982 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 150 transitions. [2020-07-20 04:01:22,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-07-20 04:01:22,984 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:22,984 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:23,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-07-20 04:01:23,198 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:23,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:23,198 INFO L82 PathProgramCache]: Analyzing trace with hash -869716604, now seen corresponding path program 21 times [2020-07-20 04:01:23,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:23,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404990545] [2020-07-20 04:01:23,199 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:23,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 480 proven. 210 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-07-20 04:01:23,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404990545] [2020-07-20 04:01:23,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861938514] [2020-07-20 04:01:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@56a4a12b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:23,822 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@56a4a12b issued 3 check-sat command(s) [2020-07-20 04:01:23,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:23,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 32 conjunts are in the unsatisfiable core [2020-07-20 04:01:23,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:24,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 532 proven. 210 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2020-07-20 04:01:24,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:24,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 48 [2020-07-20 04:01:24,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120185021] [2020-07-20 04:01:24,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-07-20 04:01:24,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:24,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-07-20 04:01:24,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=543, Invalid=1713, Unknown=0, NotChecked=0, Total=2256 [2020-07-20 04:01:24,436 INFO L87 Difference]: Start difference. First operand 140 states and 150 transitions. Second operand 48 states. [2020-07-20 04:01:25,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:25,271 INFO L93 Difference]: Finished difference Result 275 states and 330 transitions. [2020-07-20 04:01:25,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-20 04:01:25,272 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 165 [2020-07-20 04:01:25,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:25,276 INFO L225 Difference]: With dead ends: 275 [2020-07-20 04:01:25,276 INFO L226 Difference]: Without dead ends: 202 [2020-07-20 04:01:25,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1038, Invalid=2868, Unknown=0, NotChecked=0, Total=3906 [2020-07-20 04:01:25,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-07-20 04:01:25,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 142. [2020-07-20 04:01:25,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-07-20 04:01:25,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2020-07-20 04:01:25,294 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 165 [2020-07-20 04:01:25,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:25,295 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2020-07-20 04:01:25,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-07-20 04:01:25,295 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2020-07-20 04:01:25,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-07-20 04:01:25,298 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:25,298 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:25,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-07-20 04:01:25,513 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:25,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:25,513 INFO L82 PathProgramCache]: Analyzing trace with hash -583456599, now seen corresponding path program 22 times [2020-07-20 04:01:25,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:25,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104340239] [2020-07-20 04:01:25,514 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:26,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 480 proven. 240 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-07-20 04:01:26,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104340239] [2020-07-20 04:01:26,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213227088] [2020-07-20 04:01:26,096 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5aa1c0ff No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:26,168 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5aa1c0ff issued 3 check-sat command(s) [2020-07-20 04:01:26,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:26,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 34 conjunts are in the unsatisfiable core [2020-07-20 04:01:26,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:26,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 480 proven. 240 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-07-20 04:01:26,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:26,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 50 [2020-07-20 04:01:26,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888489360] [2020-07-20 04:01:26,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-07-20 04:01:26,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:26,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-07-20 04:01:26,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=593, Invalid=1857, Unknown=0, NotChecked=0, Total=2450 [2020-07-20 04:01:26,860 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand 50 states. [2020-07-20 04:01:27,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:27,883 INFO L93 Difference]: Finished difference Result 279 states and 337 transitions. [2020-07-20 04:01:27,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-20 04:01:27,883 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 167 [2020-07-20 04:01:27,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:27,886 INFO L225 Difference]: With dead ends: 279 [2020-07-20 04:01:27,887 INFO L226 Difference]: Without dead ends: 208 [2020-07-20 04:01:27,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1153, Invalid=3137, Unknown=0, NotChecked=0, Total=4290 [2020-07-20 04:01:27,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-07-20 04:01:27,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 144. [2020-07-20 04:01:27,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-07-20 04:01:27,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 154 transitions. [2020-07-20 04:01:27,910 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 154 transitions. Word has length 167 [2020-07-20 04:01:27,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:27,910 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 154 transitions. [2020-07-20 04:01:27,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-07-20 04:01:27,911 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 154 transitions. [2020-07-20 04:01:27,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-07-20 04:01:27,912 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:27,913 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:28,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:28,129 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:28,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:28,130 INFO L82 PathProgramCache]: Analyzing trace with hash -365498738, now seen corresponding path program 23 times [2020-07-20 04:01:28,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:28,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203429577] [2020-07-20 04:01:28,130 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:28,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 302 proven. 450 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-07-20 04:01:28,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203429577] [2020-07-20 04:01:28,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672977689] [2020-07-20 04:01:28,517 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9fabb2b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:28,605 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9fabb2b issued 4 check-sat command(s) [2020-07-20 04:01:28,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:28,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 35 conjunts are in the unsatisfiable core [2020-07-20 04:01:28,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:28,625 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:01:28,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 302 proven. 450 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-07-20 04:01:28,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:28,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-07-20 04:01:28,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696718192] [2020-07-20 04:01:28,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-20 04:01:28,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:28,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-20 04:01:28,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=325, Unknown=0, NotChecked=0, Total=506 [2020-07-20 04:01:28,696 INFO L87 Difference]: Start difference. First operand 144 states and 154 transitions. Second operand 23 states. [2020-07-20 04:01:28,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:28,950 INFO L93 Difference]: Finished difference Result 159 states and 170 transitions. [2020-07-20 04:01:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-20 04:01:28,951 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 169 [2020-07-20 04:01:28,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:28,953 INFO L225 Difference]: With dead ends: 159 [2020-07-20 04:01:28,953 INFO L226 Difference]: Without dead ends: 157 [2020-07-20 04:01:28,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=365, Unknown=0, NotChecked=0, Total=552 [2020-07-20 04:01:28,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-07-20 04:01:28,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2020-07-20 04:01:28,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-07-20 04:01:28,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 167 transitions. [2020-07-20 04:01:28,963 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 167 transitions. Word has length 169 [2020-07-20 04:01:28,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:28,964 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 167 transitions. [2020-07-20 04:01:28,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-20 04:01:28,964 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 167 transitions. [2020-07-20 04:01:28,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-07-20 04:01:28,965 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:28,965 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:29,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-07-20 04:01:29,179 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:29,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:29,179 INFO L82 PathProgramCache]: Analyzing trace with hash -760007568, now seen corresponding path program 24 times [2020-07-20 04:01:29,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:29,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882812012] [2020-07-20 04:01:29,180 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:29,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:29,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 612 proven. 272 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-07-20 04:01:29,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882812012] [2020-07-20 04:01:29,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180348078] [2020-07-20 04:01:29,898 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@32c63f96 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:29,985 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@32c63f96 issued 3 check-sat command(s) [2020-07-20 04:01:29,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:29,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 36 conjunts are in the unsatisfiable core [2020-07-20 04:01:29,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:30,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 672 proven. 272 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2020-07-20 04:01:30,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:30,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36] total 54 [2020-07-20 04:01:30,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259782782] [2020-07-20 04:01:30,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-07-20 04:01:30,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:30,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-07-20 04:01:30,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=683, Invalid=2179, Unknown=0, NotChecked=0, Total=2862 [2020-07-20 04:01:30,871 INFO L87 Difference]: Start difference. First operand 156 states and 167 transitions. Second operand 54 states. [2020-07-20 04:01:31,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:31,985 INFO L93 Difference]: Finished difference Result 307 states and 369 transitions. [2020-07-20 04:01:31,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-20 04:01:31,985 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 185 [2020-07-20 04:01:31,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:31,988 INFO L225 Difference]: With dead ends: 307 [2020-07-20 04:01:31,988 INFO L226 Difference]: Without dead ends: 226 [2020-07-20 04:01:31,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1312, Invalid=3658, Unknown=0, NotChecked=0, Total=4970 [2020-07-20 04:01:31,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-07-20 04:01:32,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 158. [2020-07-20 04:01:32,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-07-20 04:01:32,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 169 transitions. [2020-07-20 04:01:32,014 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 169 transitions. Word has length 185 [2020-07-20 04:01:32,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:32,014 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 169 transitions. [2020-07-20 04:01:32,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-07-20 04:01:32,014 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 169 transitions. [2020-07-20 04:01:32,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-07-20 04:01:32,016 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:32,016 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:32,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:32,232 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:32,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:32,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1861014763, now seen corresponding path program 25 times [2020-07-20 04:01:32,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:32,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507101079] [2020-07-20 04:01:32,233 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:32,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 612 proven. 306 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-07-20 04:01:32,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507101079] [2020-07-20 04:01:32,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599984315] [2020-07-20 04:01:32,998 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@591ae3ec No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:33,081 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@591ae3ec issued 3 check-sat command(s) [2020-07-20 04:01:33,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:33,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 38 conjunts are in the unsatisfiable core [2020-07-20 04:01:33,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:33,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 612 proven. 306 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-07-20 04:01:33,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:33,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 56 [2020-07-20 04:01:33,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555060650] [2020-07-20 04:01:33,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-07-20 04:01:33,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:33,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-07-20 04:01:33,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=739, Invalid=2341, Unknown=0, NotChecked=0, Total=3080 [2020-07-20 04:01:33,939 INFO L87 Difference]: Start difference. First operand 158 states and 169 transitions. Second operand 56 states. [2020-07-20 04:01:34,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:34,908 INFO L93 Difference]: Finished difference Result 311 states and 376 transitions. [2020-07-20 04:01:34,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-20 04:01:34,909 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 187 [2020-07-20 04:01:34,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:34,911 INFO L225 Difference]: With dead ends: 311 [2020-07-20 04:01:34,911 INFO L226 Difference]: Without dead ends: 232 [2020-07-20 04:01:34,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1441, Invalid=3961, Unknown=0, NotChecked=0, Total=5402 [2020-07-20 04:01:34,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-07-20 04:01:34,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 160. [2020-07-20 04:01:34,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-07-20 04:01:34,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2020-07-20 04:01:34,924 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 187 [2020-07-20 04:01:34,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:34,924 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2020-07-20 04:01:34,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-07-20 04:01:34,925 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2020-07-20 04:01:34,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-07-20 04:01:34,926 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:34,926 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:35,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-07-20 04:01:35,141 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:35,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:35,142 INFO L82 PathProgramCache]: Analyzing trace with hash 927992954, now seen corresponding path program 26 times [2020-07-20 04:01:35,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:35,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46200733] [2020-07-20 04:01:35,142 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:35,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1498 backedges. 376 proven. 578 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-07-20 04:01:35,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46200733] [2020-07-20 04:01:35,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017277920] [2020-07-20 04:01:35,597 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@74e9e0db No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:35,713 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@74e9e0db issued 4 check-sat command(s) [2020-07-20 04:01:35,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:35,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 39 conjunts are in the unsatisfiable core [2020-07-20 04:01:35,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:35,735 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:01:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1498 backedges. 376 proven. 578 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-07-20 04:01:35,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:35,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-07-20 04:01:35,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657961660] [2020-07-20 04:01:35,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-20 04:01:35,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:35,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-20 04:01:35,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=380, Unknown=0, NotChecked=0, Total=600 [2020-07-20 04:01:35,804 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand 25 states. [2020-07-20 04:01:36,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:36,036 INFO L93 Difference]: Finished difference Result 175 states and 187 transitions. [2020-07-20 04:01:36,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-20 04:01:36,037 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 189 [2020-07-20 04:01:36,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:36,039 INFO L225 Difference]: With dead ends: 175 [2020-07-20 04:01:36,039 INFO L226 Difference]: Without dead ends: 173 [2020-07-20 04:01:36,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=424, Unknown=0, NotChecked=0, Total=650 [2020-07-20 04:01:36,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-07-20 04:01:36,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2020-07-20 04:01:36,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-07-20 04:01:36,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 184 transitions. [2020-07-20 04:01:36,052 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 184 transitions. Word has length 189 [2020-07-20 04:01:36,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:36,053 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 184 transitions. [2020-07-20 04:01:36,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-20 04:01:36,053 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 184 transitions. [2020-07-20 04:01:36,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-07-20 04:01:36,056 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:36,056 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:36,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-07-20 04:01:36,270 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:36,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:36,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1753938524, now seen corresponding path program 27 times [2020-07-20 04:01:36,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:36,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501026598] [2020-07-20 04:01:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:37,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 760 proven. 342 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-07-20 04:01:37,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501026598] [2020-07-20 04:01:37,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231002569] [2020-07-20 04:01:37,113 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@585abb5e No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:37,218 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@585abb5e issued 3 check-sat command(s) [2020-07-20 04:01:37,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:37,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 40 conjunts are in the unsatisfiable core [2020-07-20 04:01:37,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:38,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 828 proven. 342 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2020-07-20 04:01:38,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:38,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 60 [2020-07-20 04:01:38,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054998893] [2020-07-20 04:01:38,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-07-20 04:01:38,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:38,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-07-20 04:01:38,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=839, Invalid=2701, Unknown=0, NotChecked=0, Total=3540 [2020-07-20 04:01:38,150 INFO L87 Difference]: Start difference. First operand 172 states and 184 transitions. Second operand 60 states. [2020-07-20 04:01:39,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:39,292 INFO L93 Difference]: Finished difference Result 339 states and 408 transitions. [2020-07-20 04:01:39,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-07-20 04:01:39,292 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 205 [2020-07-20 04:01:39,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:39,294 INFO L225 Difference]: With dead ends: 339 [2020-07-20 04:01:39,294 INFO L226 Difference]: Without dead ends: 250 [2020-07-20 04:01:39,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1215 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1618, Invalid=4544, Unknown=0, NotChecked=0, Total=6162 [2020-07-20 04:01:39,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-07-20 04:01:39,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 174. [2020-07-20 04:01:39,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-07-20 04:01:39,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 186 transitions. [2020-07-20 04:01:39,305 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 186 transitions. Word has length 205 [2020-07-20 04:01:39,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:39,306 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 186 transitions. [2020-07-20 04:01:39,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-07-20 04:01:39,306 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 186 transitions. [2020-07-20 04:01:39,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-07-20 04:01:39,307 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:39,307 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:39,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:39,522 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:39,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:39,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1542073473, now seen corresponding path program 28 times [2020-07-20 04:01:39,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:39,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255911082] [2020-07-20 04:01:39,523 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:40,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 760 proven. 380 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-07-20 04:01:40,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255911082] [2020-07-20 04:01:40,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707689349] [2020-07-20 04:01:40,422 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@204abfc8 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:40,523 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@204abfc8 issued 3 check-sat command(s) [2020-07-20 04:01:40,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:40,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 42 conjunts are in the unsatisfiable core [2020-07-20 04:01:40,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:41,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 760 proven. 380 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-07-20 04:01:41,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:41,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 62 [2020-07-20 04:01:41,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389705003] [2020-07-20 04:01:41,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-07-20 04:01:41,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:41,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-07-20 04:01:41,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=901, Invalid=2881, Unknown=0, NotChecked=0, Total=3782 [2020-07-20 04:01:41,572 INFO L87 Difference]: Start difference. First operand 174 states and 186 transitions. Second operand 62 states. [2020-07-20 04:01:42,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:42,841 INFO L93 Difference]: Finished difference Result 343 states and 415 transitions. [2020-07-20 04:01:42,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-07-20 04:01:42,841 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 207 [2020-07-20 04:01:42,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:42,844 INFO L225 Difference]: With dead ends: 343 [2020-07-20 04:01:42,844 INFO L226 Difference]: Without dead ends: 256 [2020-07-20 04:01:42,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1292 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1761, Invalid=4881, Unknown=0, NotChecked=0, Total=6642 [2020-07-20 04:01:42,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-07-20 04:01:42,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 176. [2020-07-20 04:01:42,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-07-20 04:01:42,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 188 transitions. [2020-07-20 04:01:42,856 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 188 transitions. Word has length 207 [2020-07-20 04:01:42,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:42,857 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 188 transitions. [2020-07-20 04:01:42,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-07-20 04:01:42,857 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 188 transitions. [2020-07-20 04:01:42,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-07-20 04:01:42,858 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:42,859 INFO L422 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:43,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:43,072 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:43,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:43,073 INFO L82 PathProgramCache]: Analyzing trace with hash -196777626, now seen corresponding path program 29 times [2020-07-20 04:01:43,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:43,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810845514] [2020-07-20 04:01:43,073 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 458 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-07-20 04:01:43,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810845514] [2020-07-20 04:01:43,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684381466] [2020-07-20 04:01:43,519 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6d59c761 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:43,639 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6d59c761 issued 4 check-sat command(s) [2020-07-20 04:01:43,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:43,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 43 conjunts are in the unsatisfiable core [2020-07-20 04:01:43,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:43,678 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:01:43,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 458 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-07-20 04:01:43,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:43,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2020-07-20 04:01:43,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833430747] [2020-07-20 04:01:43,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-20 04:01:43,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:43,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-20 04:01:43,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=439, Unknown=0, NotChecked=0, Total=702 [2020-07-20 04:01:43,748 INFO L87 Difference]: Start difference. First operand 176 states and 188 transitions. Second operand 27 states. [2020-07-20 04:01:43,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:43,977 INFO L93 Difference]: Finished difference Result 191 states and 204 transitions. [2020-07-20 04:01:43,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-20 04:01:43,977 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 209 [2020-07-20 04:01:43,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:43,980 INFO L225 Difference]: With dead ends: 191 [2020-07-20 04:01:43,980 INFO L226 Difference]: Without dead ends: 189 [2020-07-20 04:01:43,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=269, Invalid=487, Unknown=0, NotChecked=0, Total=756 [2020-07-20 04:01:43,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-07-20 04:01:43,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2020-07-20 04:01:43,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-07-20 04:01:43,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 201 transitions. [2020-07-20 04:01:43,992 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 201 transitions. Word has length 209 [2020-07-20 04:01:43,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:43,992 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 201 transitions. [2020-07-20 04:01:43,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-20 04:01:43,993 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 201 transitions. [2020-07-20 04:01:43,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-07-20 04:01:43,994 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:43,994 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:44,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-07-20 04:01:44,208 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:44,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:44,208 INFO L82 PathProgramCache]: Analyzing trace with hash 65077064, now seen corresponding path program 30 times [2020-07-20 04:01:44,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:44,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299232499] [2020-07-20 04:01:44,209 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2184 backedges. 924 proven. 420 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-07-20 04:01:45,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299232499] [2020-07-20 04:01:45,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263086905] [2020-07-20 04:01:45,207 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@fee89d1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:45,329 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@fee89d1 issued 3 check-sat command(s) [2020-07-20 04:01:45,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:45,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 44 conjunts are in the unsatisfiable core [2020-07-20 04:01:45,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2184 backedges. 1000 proven. 420 refuted. 0 times theorem prover too weak. 764 trivial. 0 not checked. [2020-07-20 04:01:46,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:46,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 66 [2020-07-20 04:01:46,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593658970] [2020-07-20 04:01:46,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-07-20 04:01:46,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:46,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-07-20 04:01:46,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1011, Invalid=3279, Unknown=0, NotChecked=0, Total=4290 [2020-07-20 04:01:46,505 INFO L87 Difference]: Start difference. First operand 188 states and 201 transitions. Second operand 66 states. [2020-07-20 04:01:47,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:47,881 INFO L93 Difference]: Finished difference Result 371 states and 447 transitions. [2020-07-20 04:01:47,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-07-20 04:01:47,881 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 225 [2020-07-20 04:01:47,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:47,883 INFO L225 Difference]: With dead ends: 371 [2020-07-20 04:01:47,883 INFO L226 Difference]: Without dead ends: 274 [2020-07-20 04:01:47,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1490 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1956, Invalid=5526, Unknown=0, NotChecked=0, Total=7482 [2020-07-20 04:01:47,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-07-20 04:01:47,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 190. [2020-07-20 04:01:47,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-07-20 04:01:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 203 transitions. [2020-07-20 04:01:47,894 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 203 transitions. Word has length 225 [2020-07-20 04:01:47,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:47,895 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 203 transitions. [2020-07-20 04:01:47,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-07-20 04:01:47,895 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 203 transitions. [2020-07-20 04:01:47,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-07-20 04:01:47,896 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:47,897 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:48,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:48,112 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:48,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:48,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1137618157, now seen corresponding path program 31 times [2020-07-20 04:01:48,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:48,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336813252] [2020-07-20 04:01:48,113 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2226 backedges. 924 proven. 462 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-07-20 04:01:49,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336813252] [2020-07-20 04:01:49,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466061086] [2020-07-20 04:01:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@180243fa No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:49,271 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@180243fa issued 3 check-sat command(s) [2020-07-20 04:01:49,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:49,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 46 conjunts are in the unsatisfiable core [2020-07-20 04:01:49,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:50,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2226 backedges. 924 proven. 462 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-07-20 04:01:50,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:50,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 68 [2020-07-20 04:01:50,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012160191] [2020-07-20 04:01:50,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-07-20 04:01:50,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:50,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-07-20 04:01:50,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1079, Invalid=3477, Unknown=0, NotChecked=0, Total=4556 [2020-07-20 04:01:50,540 INFO L87 Difference]: Start difference. First operand 190 states and 203 transitions. Second operand 68 states. [2020-07-20 04:01:51,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:51,977 INFO L93 Difference]: Finished difference Result 375 states and 454 transitions. [2020-07-20 04:01:51,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-07-20 04:01:51,978 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 227 [2020-07-20 04:01:51,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:51,980 INFO L225 Difference]: With dead ends: 375 [2020-07-20 04:01:51,980 INFO L226 Difference]: Without dead ends: 280 [2020-07-20 04:01:51,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1575 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2113, Invalid=5897, Unknown=0, NotChecked=0, Total=8010 [2020-07-20 04:01:51,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-07-20 04:01:51,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 192. [2020-07-20 04:01:51,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-07-20 04:01:51,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 205 transitions. [2020-07-20 04:01:51,993 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 205 transitions. Word has length 227 [2020-07-20 04:01:51,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:51,994 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 205 transitions. [2020-07-20 04:01:51,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-07-20 04:01:51,994 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 205 transitions. [2020-07-20 04:01:51,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-07-20 04:01:51,995 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:51,995 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:52,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-07-20 04:01:52,211 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:52,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:52,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1057457490, now seen corresponding path program 32 times [2020-07-20 04:01:52,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:52,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776531031] [2020-07-20 04:01:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:52,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 548 proven. 882 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-07-20 04:01:52,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776531031] [2020-07-20 04:01:52,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425420851] [2020-07-20 04:01:52,828 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@760b5d4b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:52,994 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@760b5d4b issued 4 check-sat command(s) [2020-07-20 04:01:52,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:52,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 47 conjunts are in the unsatisfiable core [2020-07-20 04:01:53,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:53,030 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:01:53,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 548 proven. 882 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-07-20 04:01:53,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:53,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2020-07-20 04:01:53,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665157898] [2020-07-20 04:01:53,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-20 04:01:53,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:53,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-20 04:01:53,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=502, Unknown=0, NotChecked=0, Total=812 [2020-07-20 04:01:53,185 INFO L87 Difference]: Start difference. First operand 192 states and 205 transitions. Second operand 29 states. [2020-07-20 04:01:53,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:53,546 INFO L93 Difference]: Finished difference Result 207 states and 221 transitions. [2020-07-20 04:01:53,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-20 04:01:53,547 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 229 [2020-07-20 04:01:53,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:53,549 INFO L225 Difference]: With dead ends: 207 [2020-07-20 04:01:53,549 INFO L226 Difference]: Without dead ends: 205 [2020-07-20 04:01:53,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=316, Invalid=554, Unknown=0, NotChecked=0, Total=870 [2020-07-20 04:01:53,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-07-20 04:01:53,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2020-07-20 04:01:53,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-07-20 04:01:53,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 218 transitions. [2020-07-20 04:01:53,567 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 218 transitions. Word has length 229 [2020-07-20 04:01:53,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:53,567 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 218 transitions. [2020-07-20 04:01:53,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-20 04:01:53,568 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 218 transitions. [2020-07-20 04:01:53,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-07-20 04:01:53,570 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:53,571 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:53,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-07-20 04:01:53,786 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:53,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:53,786 INFO L82 PathProgramCache]: Analyzing trace with hash -777665740, now seen corresponding path program 33 times [2020-07-20 04:01:53,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:53,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485371960] [2020-07-20 04:01:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:55,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 1104 proven. 506 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-07-20 04:01:55,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485371960] [2020-07-20 04:01:55,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666703204] [2020-07-20 04:01:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@47085ffa No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:55,131 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@47085ffa issued 3 check-sat command(s) [2020-07-20 04:01:55,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:55,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-20 04:01:55,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:56,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 1188 proven. 506 refuted. 0 times theorem prover too weak. 928 trivial. 0 not checked. [2020-07-20 04:01:56,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:56,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48] total 72 [2020-07-20 04:01:56,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926410697] [2020-07-20 04:01:56,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-07-20 04:01:56,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:56,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-07-20 04:01:56,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1199, Invalid=3913, Unknown=0, NotChecked=0, Total=5112 [2020-07-20 04:01:56,553 INFO L87 Difference]: Start difference. First operand 204 states and 218 transitions. Second operand 72 states. [2020-07-20 04:01:58,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:58,140 INFO L93 Difference]: Finished difference Result 403 states and 486 transitions. [2020-07-20 04:01:58,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-07-20 04:01:58,141 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 245 [2020-07-20 04:01:58,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:58,142 INFO L225 Difference]: With dead ends: 403 [2020-07-20 04:01:58,142 INFO L226 Difference]: Without dead ends: 298 [2020-07-20 04:01:58,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1793 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2326, Invalid=6604, Unknown=0, NotChecked=0, Total=8930 [2020-07-20 04:01:58,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-07-20 04:01:58,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 206. [2020-07-20 04:01:58,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-07-20 04:01:58,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 220 transitions. [2020-07-20 04:01:58,154 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 220 transitions. Word has length 245 [2020-07-20 04:01:58,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:58,154 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 220 transitions. [2020-07-20 04:01:58,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-07-20 04:01:58,154 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 220 transitions. [2020-07-20 04:01:58,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-07-20 04:01:58,155 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:58,156 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:58,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-07-20 04:01:58,356 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:58,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:58,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1435577433, now seen corresponding path program 34 times [2020-07-20 04:01:58,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:58,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634667261] [2020-07-20 04:01:58,358 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:01:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:59,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 1104 proven. 552 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-07-20 04:01:59,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634667261] [2020-07-20 04:01:59,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289134099] [2020-07-20 04:01:59,602 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@59d39714 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:59,714 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@59d39714 issued 3 check-sat command(s) [2020-07-20 04:01:59,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:59,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 50 conjunts are in the unsatisfiable core [2020-07-20 04:01:59,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:02:01,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 1104 proven. 552 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-07-20 04:02:01,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:02:01,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 74 [2020-07-20 04:02:01,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851730867] [2020-07-20 04:02:01,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-07-20 04:02:01,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:02:01,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-07-20 04:02:01,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1273, Invalid=4129, Unknown=0, NotChecked=0, Total=5402 [2020-07-20 04:02:01,259 INFO L87 Difference]: Start difference. First operand 206 states and 220 transitions. Second operand 74 states. [2020-07-20 04:02:03,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:02:03,041 INFO L93 Difference]: Finished difference Result 407 states and 493 transitions. [2020-07-20 04:02:03,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-07-20 04:02:03,041 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 247 [2020-07-20 04:02:03,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:02:03,042 INFO L225 Difference]: With dead ends: 407 [2020-07-20 04:02:03,042 INFO L226 Difference]: Without dead ends: 304 [2020-07-20 04:02:03,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1886 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2497, Invalid=7009, Unknown=0, NotChecked=0, Total=9506 [2020-07-20 04:02:03,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-07-20 04:02:03,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 208. [2020-07-20 04:02:03,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-07-20 04:02:03,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 222 transitions. [2020-07-20 04:02:03,058 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 222 transitions. Word has length 247 [2020-07-20 04:02:03,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:02:03,059 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 222 transitions. [2020-07-20 04:02:03,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-07-20 04:02:03,059 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 222 transitions. [2020-07-20 04:02:03,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-07-20 04:02:03,060 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:02:03,061 INFO L422 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:02:03,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-07-20 04:02:03,274 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:02:03,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:02:03,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1941512130, now seen corresponding path program 35 times [2020-07-20 04:02:03,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:02:03,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061771561] [2020-07-20 04:02:03,275 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:02:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:03,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2716 backedges. 646 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-07-20 04:02:03,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061771561] [2020-07-20 04:02:03,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097419692] [2020-07-20 04:02:03,834 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@52971c1b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:02:03,946 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@52971c1b issued 4 check-sat command(s) [2020-07-20 04:02:03,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:02:03,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 51 conjunts are in the unsatisfiable core [2020-07-20 04:02:03,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:02:03,976 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:02:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2716 backedges. 646 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-07-20 04:02:04,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:02:04,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-07-20 04:02:04,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991657812] [2020-07-20 04:02:04,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-20 04:02:04,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:02:04,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-20 04:02:04,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=569, Unknown=0, NotChecked=0, Total=930 [2020-07-20 04:02:04,113 INFO L87 Difference]: Start difference. First operand 208 states and 222 transitions. Second operand 31 states. [2020-07-20 04:02:04,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:02:04,481 INFO L93 Difference]: Finished difference Result 223 states and 238 transitions. [2020-07-20 04:02:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-20 04:02:04,481 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 249 [2020-07-20 04:02:04,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:02:04,484 INFO L225 Difference]: With dead ends: 223 [2020-07-20 04:02:04,484 INFO L226 Difference]: Without dead ends: 221 [2020-07-20 04:02:04,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=367, Invalid=625, Unknown=0, NotChecked=0, Total=992 [2020-07-20 04:02:04,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-07-20 04:02:04,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2020-07-20 04:02:04,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-07-20 04:02:04,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 235 transitions. [2020-07-20 04:02:04,496 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 235 transitions. Word has length 249 [2020-07-20 04:02:04,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:02:04,497 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 235 transitions. [2020-07-20 04:02:04,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-20 04:02:04,497 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 235 transitions. [2020-07-20 04:02:04,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-07-20 04:02:04,498 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:02:04,499 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:02:04,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-07-20 04:02:04,712 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:02:04,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:02:04,712 INFO L82 PathProgramCache]: Analyzing trace with hash -712391136, now seen corresponding path program 36 times [2020-07-20 04:02:04,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:02:04,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690890532] [2020-07-20 04:02:04,713 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:02:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:06,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3100 backedges. 1300 proven. 600 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-07-20 04:02:06,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690890532] [2020-07-20 04:02:06,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219656796] [2020-07-20 04:02:06,147 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@f65fbdd No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:02:06,252 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@f65fbdd issued 3 check-sat command(s) [2020-07-20 04:02:06,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:02:06,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 52 conjunts are in the unsatisfiable core [2020-07-20 04:02:06,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:02:07,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3100 backedges. 1392 proven. 600 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2020-07-20 04:02:07,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:02:07,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 78 [2020-07-20 04:02:07,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054524743] [2020-07-20 04:02:07,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-07-20 04:02:07,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:02:07,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-07-20 04:02:07,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1403, Invalid=4603, Unknown=0, NotChecked=0, Total=6006 [2020-07-20 04:02:07,961 INFO L87 Difference]: Start difference. First operand 220 states and 235 transitions. Second operand 78 states. [2020-07-20 04:02:09,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:02:09,789 INFO L93 Difference]: Finished difference Result 435 states and 525 transitions. [2020-07-20 04:02:09,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-07-20 04:02:09,789 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 265 [2020-07-20 04:02:09,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:02:09,791 INFO L225 Difference]: With dead ends: 435 [2020-07-20 04:02:09,791 INFO L226 Difference]: Without dead ends: 322 [2020-07-20 04:02:09,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2728, Invalid=7778, Unknown=0, NotChecked=0, Total=10506 [2020-07-20 04:02:09,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-07-20 04:02:09,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 222. [2020-07-20 04:02:09,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-07-20 04:02:09,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 237 transitions. [2020-07-20 04:02:09,804 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 237 transitions. Word has length 265 [2020-07-20 04:02:09,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:02:09,804 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 237 transitions. [2020-07-20 04:02:09,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-07-20 04:02:09,804 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 237 transitions. [2020-07-20 04:02:09,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-07-20 04:02:09,806 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:02:09,806 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:02:10,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-07-20 04:02:10,021 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:02:10,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:02:10,021 INFO L82 PathProgramCache]: Analyzing trace with hash -993908027, now seen corresponding path program 37 times [2020-07-20 04:02:10,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:02:10,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165503784] [2020-07-20 04:02:10,022 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:02:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:11,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1300 proven. 650 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-07-20 04:02:11,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165503784] [2020-07-20 04:02:11,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163515794] [2020-07-20 04:02:11,522 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@162149a3 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:02:11,631 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@162149a3 issued 3 check-sat command(s) [2020-07-20 04:02:11,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:02:11,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 54 conjunts are in the unsatisfiable core [2020-07-20 04:02:11,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:02:13,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1300 proven. 650 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-07-20 04:02:13,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:02:13,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 80 [2020-07-20 04:02:13,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554097948] [2020-07-20 04:02:13,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-07-20 04:02:13,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:02:13,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-07-20 04:02:13,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1483, Invalid=4837, Unknown=0, NotChecked=0, Total=6320 [2020-07-20 04:02:13,488 INFO L87 Difference]: Start difference. First operand 222 states and 237 transitions. Second operand 80 states. [2020-07-20 04:02:15,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:02:15,475 INFO L93 Difference]: Finished difference Result 439 states and 532 transitions. [2020-07-20 04:02:15,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-07-20 04:02:15,475 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 267 [2020-07-20 04:02:15,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:02:15,477 INFO L225 Difference]: With dead ends: 439 [2020-07-20 04:02:15,477 INFO L226 Difference]: Without dead ends: 328 [2020-07-20 04:02:15,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2225 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2913, Invalid=8217, Unknown=0, NotChecked=0, Total=11130 [2020-07-20 04:02:15,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-07-20 04:02:15,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 224. [2020-07-20 04:02:15,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-07-20 04:02:15,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 239 transitions. [2020-07-20 04:02:15,495 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 239 transitions. Word has length 267 [2020-07-20 04:02:15,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:02:15,495 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 239 transitions. [2020-07-20 04:02:15,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-07-20 04:02:15,495 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 239 transitions. [2020-07-20 04:02:15,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-07-20 04:02:15,497 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:02:15,497 INFO L422 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:02:15,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-07-20 04:02:15,713 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:02:15,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:02:15,713 INFO L82 PathProgramCache]: Analyzing trace with hash -948700630, now seen corresponding path program 38 times [2020-07-20 04:02:15,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:02:15,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851618986] [2020-07-20 04:02:15,714 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:02:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:16,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 752 proven. 1250 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-07-20 04:02:16,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851618986] [2020-07-20 04:02:16,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678007047] [2020-07-20 04:02:16,434 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@16b88423 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:02:16,598 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@16b88423 issued 4 check-sat command(s) [2020-07-20 04:02:16,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:02:16,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 55 conjunts are in the unsatisfiable core [2020-07-20 04:02:16,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:02:16,624 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:02:16,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 752 proven. 1250 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-07-20 04:02:16,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:02:16,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-07-20 04:02:16,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207854838] [2020-07-20 04:02:16,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-20 04:02:16,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:02:16,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-20 04:02:16,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=640, Unknown=0, NotChecked=0, Total=1056 [2020-07-20 04:02:16,735 INFO L87 Difference]: Start difference. First operand 224 states and 239 transitions. Second operand 33 states. [2020-07-20 04:02:17,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:02:17,172 INFO L93 Difference]: Finished difference Result 239 states and 255 transitions. [2020-07-20 04:02:17,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-20 04:02:17,184 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 269 [2020-07-20 04:02:17,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:02:17,186 INFO L225 Difference]: With dead ends: 239 [2020-07-20 04:02:17,186 INFO L226 Difference]: Without dead ends: 237 [2020-07-20 04:02:17,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=422, Invalid=700, Unknown=0, NotChecked=0, Total=1122 [2020-07-20 04:02:17,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-07-20 04:02:17,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 236. [2020-07-20 04:02:17,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-07-20 04:02:17,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 252 transitions. [2020-07-20 04:02:17,198 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 252 transitions. Word has length 269 [2020-07-20 04:02:17,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:02:17,202 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 252 transitions. [2020-07-20 04:02:17,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-20 04:02:17,202 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 252 transitions. [2020-07-20 04:02:17,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-07-20 04:02:17,204 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:02:17,204 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 27, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:02:17,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:02:17,418 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:02:17,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:02:17,419 INFO L82 PathProgramCache]: Analyzing trace with hash 167610380, now seen corresponding path program 39 times [2020-07-20 04:02:17,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:02:17,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767387120] [2020-07-20 04:02:17,419 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:02:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:19,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 1512 proven. 702 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-07-20 04:02:19,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767387120] [2020-07-20 04:02:19,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79293058] [2020-07-20 04:02:19,100 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4b329f3b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:02:19,219 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4b329f3b issued 3 check-sat command(s) [2020-07-20 04:02:19,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:02:19,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 56 conjunts are in the unsatisfiable core [2020-07-20 04:02:19,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:02:21,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 1612 proven. 702 refuted. 0 times theorem prover too weak. 1304 trivial. 0 not checked. [2020-07-20 04:02:21,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:02:21,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 84 [2020-07-20 04:02:21,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34444280] [2020-07-20 04:02:21,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-07-20 04:02:21,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:02:21,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-07-20 04:02:21,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1623, Invalid=5349, Unknown=0, NotChecked=0, Total=6972 [2020-07-20 04:02:21,373 INFO L87 Difference]: Start difference. First operand 236 states and 252 transitions. Second operand 84 states. [2020-07-20 04:02:23,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:02:23,545 INFO L93 Difference]: Finished difference Result 467 states and 564 transitions. [2020-07-20 04:02:23,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-07-20 04:02:23,545 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 285 [2020-07-20 04:02:23,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:02:23,548 INFO L225 Difference]: With dead ends: 467 [2020-07-20 04:02:23,548 INFO L226 Difference]: Without dead ends: 346 [2020-07-20 04:02:23,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2483 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3162, Invalid=9048, Unknown=0, NotChecked=0, Total=12210 [2020-07-20 04:02:23,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-07-20 04:02:23,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 238. [2020-07-20 04:02:23,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-07-20 04:02:23,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 254 transitions. [2020-07-20 04:02:23,564 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 254 transitions. Word has length 285 [2020-07-20 04:02:23,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:02:23,564 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 254 transitions. [2020-07-20 04:02:23,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-07-20 04:02:23,564 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 254 transitions. [2020-07-20 04:02:23,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-07-20 04:02:23,566 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:02:23,566 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:02:23,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:02:23,780 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:02:23,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:02:23,780 INFO L82 PathProgramCache]: Analyzing trace with hash 196225073, now seen corresponding path program 40 times [2020-07-20 04:02:23,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:02:23,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442477454] [2020-07-20 04:02:23,781 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:02:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:25,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3672 backedges. 1512 proven. 756 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-07-20 04:02:25,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442477454] [2020-07-20 04:02:25,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440848931] [2020-07-20 04:02:25,544 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5672082c No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:02:25,659 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5672082c issued 3 check-sat command(s) [2020-07-20 04:02:25,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:02:25,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 58 conjunts are in the unsatisfiable core [2020-07-20 04:02:25,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:02:27,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3672 backedges. 1512 proven. 756 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-07-20 04:02:27,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:02:27,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 86 [2020-07-20 04:02:27,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191466509] [2020-07-20 04:02:27,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-07-20 04:02:27,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:02:27,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-07-20 04:02:27,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1709, Invalid=5601, Unknown=0, NotChecked=0, Total=7310 [2020-07-20 04:02:27,880 INFO L87 Difference]: Start difference. First operand 238 states and 254 transitions. Second operand 86 states. [2020-07-20 04:02:30,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:02:30,060 INFO L93 Difference]: Finished difference Result 471 states and 571 transitions. [2020-07-20 04:02:30,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-07-20 04:02:30,060 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 287 [2020-07-20 04:02:30,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:02:30,062 INFO L225 Difference]: With dead ends: 471 [2020-07-20 04:02:30,062 INFO L226 Difference]: Without dead ends: 352 [2020-07-20 04:02:30,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2592 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3361, Invalid=9521, Unknown=0, NotChecked=0, Total=12882 [2020-07-20 04:02:30,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-07-20 04:02:30,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 240. [2020-07-20 04:02:30,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-07-20 04:02:30,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 256 transitions. [2020-07-20 04:02:30,077 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 256 transitions. Word has length 287 [2020-07-20 04:02:30,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:02:30,077 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 256 transitions. [2020-07-20 04:02:30,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-07-20 04:02:30,077 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 256 transitions. [2020-07-20 04:02:30,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-07-20 04:02:30,079 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:02:30,079 INFO L422 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:02:30,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:02:30,293 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:02:30,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:02:30,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1925141270, now seen corresponding path program 41 times [2020-07-20 04:02:30,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:02:30,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79650924] [2020-07-20 04:02:30,295 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:02:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:31,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3728 backedges. 866 proven. 1458 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-07-20 04:02:31,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79650924] [2020-07-20 04:02:31,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24498130] [2020-07-20 04:02:31,062 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@614e001e No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:02:31,189 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@614e001e issued 4 check-sat command(s) [2020-07-20 04:02:31,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:02:31,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 59 conjunts are in the unsatisfiable core [2020-07-20 04:02:31,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:02:31,214 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:02:31,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3728 backedges. 866 proven. 1458 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-07-20 04:02:31,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:02:31,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-07-20 04:02:31,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365426090] [2020-07-20 04:02:31,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-07-20 04:02:31,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:02:31,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-07-20 04:02:31,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=715, Unknown=0, NotChecked=0, Total=1190 [2020-07-20 04:02:31,373 INFO L87 Difference]: Start difference. First operand 240 states and 256 transitions. Second operand 35 states. [2020-07-20 04:02:31,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:02:31,737 INFO L93 Difference]: Finished difference Result 255 states and 272 transitions. [2020-07-20 04:02:31,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-20 04:02:31,738 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 289 [2020-07-20 04:02:31,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:02:31,740 INFO L225 Difference]: With dead ends: 255 [2020-07-20 04:02:31,740 INFO L226 Difference]: Without dead ends: 253 [2020-07-20 04:02:31,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=481, Invalid=779, Unknown=0, NotChecked=0, Total=1260 [2020-07-20 04:02:31,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-07-20 04:02:31,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 252. [2020-07-20 04:02:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-07-20 04:02:31,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 269 transitions. [2020-07-20 04:02:31,753 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 269 transitions. Word has length 289 [2020-07-20 04:02:31,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:02:31,753 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 269 transitions. [2020-07-20 04:02:31,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-07-20 04:02:31,753 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 269 transitions. [2020-07-20 04:02:31,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-07-20 04:02:31,755 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:02:31,755 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 29, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:02:31,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-07-20 04:02:31,969 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:02:31,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:02:31,970 INFO L82 PathProgramCache]: Analyzing trace with hash -2144237320, now seen corresponding path program 42 times [2020-07-20 04:02:31,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:02:31,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718680903] [2020-07-20 04:02:31,970 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:02:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:33,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4176 backedges. 1740 proven. 812 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-07-20 04:02:33,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718680903] [2020-07-20 04:02:33,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475054596] [2020-07-20 04:02:33,971 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@48524e4f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:02:34,093 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@48524e4f issued 3 check-sat command(s) [2020-07-20 04:02:34,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:02:34,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 60 conjunts are in the unsatisfiable core [2020-07-20 04:02:34,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:02:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4176 backedges. 1848 proven. 812 refuted. 0 times theorem prover too weak. 1516 trivial. 0 not checked. [2020-07-20 04:02:36,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:02:36,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60] total 90 [2020-07-20 04:02:36,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479549604] [2020-07-20 04:02:36,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-07-20 04:02:36,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:02:36,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-07-20 04:02:36,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1859, Invalid=6151, Unknown=0, NotChecked=0, Total=8010 [2020-07-20 04:02:36,546 INFO L87 Difference]: Start difference. First operand 252 states and 269 transitions. Second operand 90 states. [2020-07-20 04:02:39,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:02:39,041 INFO L93 Difference]: Finished difference Result 499 states and 603 transitions. [2020-07-20 04:02:39,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-07-20 04:02:39,041 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 305 [2020-07-20 04:02:39,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:02:39,044 INFO L225 Difference]: With dead ends: 499 [2020-07-20 04:02:39,044 INFO L226 Difference]: Without dead ends: 370 [2020-07-20 04:02:39,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2870 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3628, Invalid=10414, Unknown=0, NotChecked=0, Total=14042 [2020-07-20 04:02:39,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-07-20 04:02:39,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 254. [2020-07-20 04:02:39,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-07-20 04:02:39,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 271 transitions. [2020-07-20 04:02:39,060 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 271 transitions. Word has length 305 [2020-07-20 04:02:39,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:02:39,060 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 271 transitions. [2020-07-20 04:02:39,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-07-20 04:02:39,060 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 271 transitions. [2020-07-20 04:02:39,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-07-20 04:02:39,062 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:02:39,062 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:02:39,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:02:39,263 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:02:39,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:02:39,263 INFO L82 PathProgramCache]: Analyzing trace with hash 191997085, now seen corresponding path program 43 times [2020-07-20 04:02:39,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:02:39,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429080924] [2020-07-20 04:02:39,264 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:02:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:41,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 1740 proven. 870 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-07-20 04:02:41,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429080924] [2020-07-20 04:02:41,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907639531] [2020-07-20 04:02:41,445 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2d13850b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:02:41,569 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2d13850b issued 3 check-sat command(s) [2020-07-20 04:02:41,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:02:41,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 62 conjunts are in the unsatisfiable core [2020-07-20 04:02:41,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:02:44,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 1740 proven. 870 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-07-20 04:02:44,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:02:44,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 92 [2020-07-20 04:02:44,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658437292] [2020-07-20 04:02:44,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2020-07-20 04:02:44,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:02:44,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2020-07-20 04:02:44,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1951, Invalid=6421, Unknown=0, NotChecked=0, Total=8372 [2020-07-20 04:02:44,181 INFO L87 Difference]: Start difference. First operand 254 states and 271 transitions. Second operand 92 states. [2020-07-20 04:02:46,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:02:46,862 INFO L93 Difference]: Finished difference Result 503 states and 610 transitions. [2020-07-20 04:02:46,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-07-20 04:02:46,862 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 307 [2020-07-20 04:02:46,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:02:46,864 INFO L225 Difference]: With dead ends: 503 [2020-07-20 04:02:46,864 INFO L226 Difference]: Without dead ends: 376 [2020-07-20 04:02:46,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2987 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=3841, Invalid=10921, Unknown=0, NotChecked=0, Total=14762 [2020-07-20 04:02:46,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-07-20 04:02:46,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 256. [2020-07-20 04:02:46,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-07-20 04:02:46,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 273 transitions. [2020-07-20 04:02:46,883 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 273 transitions. Word has length 307 [2020-07-20 04:02:46,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:02:46,884 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 273 transitions. [2020-07-20 04:02:46,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 92 states. [2020-07-20 04:02:46,884 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 273 transitions. [2020-07-20 04:02:46,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-07-20 04:02:46,886 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:02:46,886 INFO L422 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:02:47,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:02:47,100 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:02:47,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:02:47,100 INFO L82 PathProgramCache]: Analyzing trace with hash -954635518, now seen corresponding path program 44 times [2020-07-20 04:02:47,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:02:47,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833467079] [2020-07-20 04:02:47,101 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:02:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:47,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 988 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-07-20 04:02:47,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833467079] [2020-07-20 04:02:47,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722608346] [2020-07-20 04:02:47,982 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4f99d220 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:02:48,112 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4f99d220 issued 4 check-sat command(s) [2020-07-20 04:02:48,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:02:48,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 63 conjunts are in the unsatisfiable core [2020-07-20 04:02:48,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:02:48,135 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:02:48,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 988 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-07-20 04:02:48,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:02:48,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-07-20 04:02:48,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104872433] [2020-07-20 04:02:48,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-07-20 04:02:48,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:02:48,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-07-20 04:02:48,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=538, Invalid=794, Unknown=0, NotChecked=0, Total=1332 [2020-07-20 04:02:48,269 INFO L87 Difference]: Start difference. First operand 256 states and 273 transitions. Second operand 37 states. [2020-07-20 04:02:48,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:02:48,826 INFO L93 Difference]: Finished difference Result 271 states and 289 transitions. [2020-07-20 04:02:48,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-20 04:02:48,827 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 309 [2020-07-20 04:02:48,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:02:48,830 INFO L225 Difference]: With dead ends: 271 [2020-07-20 04:02:48,830 INFO L226 Difference]: Without dead ends: 269 [2020-07-20 04:02:48,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=544, Invalid=862, Unknown=0, NotChecked=0, Total=1406 [2020-07-20 04:02:48,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-07-20 04:02:48,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 268. [2020-07-20 04:02:48,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-07-20 04:02:48,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 286 transitions. [2020-07-20 04:02:48,844 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 286 transitions. Word has length 309 [2020-07-20 04:02:48,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:02:48,845 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 286 transitions. [2020-07-20 04:02:48,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-07-20 04:02:48,845 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 286 transitions. [2020-07-20 04:02:48,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-07-20 04:02:48,847 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:02:48,847 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 31, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:02:49,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-07-20 04:02:49,063 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:02:49,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:02:49,064 INFO L82 PathProgramCache]: Analyzing trace with hash -2146023196, now seen corresponding path program 45 times [2020-07-20 04:02:49,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:02:49,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629453271] [2020-07-20 04:02:49,064 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:02:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:51,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 1984 proven. 930 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-07-20 04:02:51,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629453271] [2020-07-20 04:02:51,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000293135] [2020-07-20 04:02:51,360 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60508901 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:02:51,485 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60508901 issued 3 check-sat command(s) [2020-07-20 04:02:51,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:02:51,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 64 conjunts are in the unsatisfiable core [2020-07-20 04:02:51,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:02:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 2100 proven. 930 refuted. 0 times theorem prover too weak. 1744 trivial. 0 not checked. [2020-07-20 04:02:54,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:02:54,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 96 [2020-07-20 04:02:54,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575214936] [2020-07-20 04:02:54,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2020-07-20 04:02:54,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:02:54,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2020-07-20 04:02:54,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2111, Invalid=7009, Unknown=0, NotChecked=0, Total=9120 [2020-07-20 04:02:54,421 INFO L87 Difference]: Start difference. First operand 268 states and 286 transitions. Second operand 96 states. [2020-07-20 04:02:57,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:02:57,472 INFO L93 Difference]: Finished difference Result 531 states and 642 transitions. [2020-07-20 04:02:57,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-07-20 04:02:57,473 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 325 [2020-07-20 04:02:57,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:02:57,476 INFO L225 Difference]: With dead ends: 531 [2020-07-20 04:02:57,476 INFO L226 Difference]: Without dead ends: 394 [2020-07-20 04:02:57,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3285 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=4126, Invalid=11876, Unknown=0, NotChecked=0, Total=16002 [2020-07-20 04:02:57,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-07-20 04:02:57,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 270. [2020-07-20 04:02:57,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-07-20 04:02:57,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 288 transitions. [2020-07-20 04:02:57,495 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 288 transitions. Word has length 325 [2020-07-20 04:02:57,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:02:57,495 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 288 transitions. [2020-07-20 04:02:57,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 96 states. [2020-07-20 04:02:57,496 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 288 transitions. [2020-07-20 04:02:57,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 04:02:57,498 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:02:57,498 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:02:57,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-07-20 04:02:57,718 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:02:57,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:02:57,719 INFO L82 PathProgramCache]: Analyzing trace with hash 735125513, now seen corresponding path program 46 times [2020-07-20 04:02:57,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:02:57,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146313013] [2020-07-20 04:02:57,719 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:02:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:00,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4836 backedges. 1984 proven. 992 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-07-20 04:03:00,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146313013] [2020-07-20 04:03:00,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142332780] [2020-07-20 04:03:00,134 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@f62d586 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:03:00,283 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@f62d586 issued 3 check-sat command(s) [2020-07-20 04:03:00,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:03:00,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 66 conjunts are in the unsatisfiable core [2020-07-20 04:03:00,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:03:03,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4836 backedges. 1984 proven. 992 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-07-20 04:03:03,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:03:03,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 98 [2020-07-20 04:03:03,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530130771] [2020-07-20 04:03:03,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2020-07-20 04:03:03,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:03:03,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2020-07-20 04:03:03,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2209, Invalid=7297, Unknown=0, NotChecked=0, Total=9506 [2020-07-20 04:03:03,350 INFO L87 Difference]: Start difference. First operand 270 states and 288 transitions. Second operand 98 states. [2020-07-20 04:03:06,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:03:06,427 INFO L93 Difference]: Finished difference Result 535 states and 649 transitions. [2020-07-20 04:03:06,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-07-20 04:03:06,428 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 327 [2020-07-20 04:03:06,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:03:06,430 INFO L225 Difference]: With dead ends: 535 [2020-07-20 04:03:06,430 INFO L226 Difference]: Without dead ends: 400 [2020-07-20 04:03:06,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3410 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=4353, Invalid=12417, Unknown=0, NotChecked=0, Total=16770 [2020-07-20 04:03:06,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-07-20 04:03:06,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 272. [2020-07-20 04:03:06,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-07-20 04:03:06,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 290 transitions. [2020-07-20 04:03:06,447 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 290 transitions. Word has length 327 [2020-07-20 04:03:06,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:03:06,447 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 290 transitions. [2020-07-20 04:03:06,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 98 states. [2020-07-20 04:03:06,447 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 290 transitions. [2020-07-20 04:03:06,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-07-20 04:03:06,449 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:03:06,450 INFO L422 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:03:06,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-07-20 04:03:06,665 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:03:06,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:03:06,665 INFO L82 PathProgramCache]: Analyzing trace with hash -734871058, now seen corresponding path program 47 times [2020-07-20 04:03:06,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:03:06,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937164989] [2020-07-20 04:03:06,666 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:03:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:07,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1118 proven. 1922 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-07-20 04:03:07,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937164989] [2020-07-20 04:03:07,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494140781] [2020-07-20 04:03:07,697 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a251007 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:03:07,840 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a251007 issued 4 check-sat command(s) [2020-07-20 04:03:07,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:03:07,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 67 conjunts are in the unsatisfiable core [2020-07-20 04:03:07,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:03:07,867 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:03:07,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1118 proven. 1922 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-07-20 04:03:07,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:03:07,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2020-07-20 04:03:07,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002354896] [2020-07-20 04:03:07,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-07-20 04:03:07,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:03:07,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-07-20 04:03:07,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=877, Unknown=0, NotChecked=0, Total=1482 [2020-07-20 04:03:07,979 INFO L87 Difference]: Start difference. First operand 272 states and 290 transitions. Second operand 39 states. [2020-07-20 04:03:08,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:03:08,597 INFO L93 Difference]: Finished difference Result 287 states and 306 transitions. [2020-07-20 04:03:08,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-20 04:03:08,598 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 329 [2020-07-20 04:03:08,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:03:08,600 INFO L225 Difference]: With dead ends: 287 [2020-07-20 04:03:08,600 INFO L226 Difference]: Without dead ends: 285 [2020-07-20 04:03:08,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=611, Invalid=949, Unknown=0, NotChecked=0, Total=1560 [2020-07-20 04:03:08,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-07-20 04:03:08,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 284. [2020-07-20 04:03:08,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-07-20 04:03:08,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 303 transitions. [2020-07-20 04:03:08,615 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 303 transitions. Word has length 329 [2020-07-20 04:03:08,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:03:08,615 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 303 transitions. [2020-07-20 04:03:08,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-07-20 04:03:08,616 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 303 transitions. [2020-07-20 04:03:08,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-07-20 04:03:08,618 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:03:08,618 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 33, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:03:08,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:03:08,819 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:03:08,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:03:08,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1470347312, now seen corresponding path program 48 times [2020-07-20 04:03:08,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:03:08,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947670986] [2020-07-20 04:03:08,820 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:03:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 5412 backedges. 2244 proven. 1056 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-07-20 04:03:11,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947670986] [2020-07-20 04:03:11,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243684097] [2020-07-20 04:03:11,578 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@581ce714 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:03:11,717 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@581ce714 issued 3 check-sat command(s) [2020-07-20 04:03:11,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:03:11,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-20 04:03:11,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:03:15,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5412 backedges. 2368 proven. 1056 refuted. 0 times theorem prover too weak. 1988 trivial. 0 not checked. [2020-07-20 04:03:15,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:03:15,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 102 [2020-07-20 04:03:15,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018023717] [2020-07-20 04:03:15,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2020-07-20 04:03:15,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:03:15,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2020-07-20 04:03:15,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2379, Invalid=7923, Unknown=0, NotChecked=0, Total=10302 [2020-07-20 04:03:15,106 INFO L87 Difference]: Start difference. First operand 284 states and 303 transitions. Second operand 102 states. [2020-07-20 04:03:18,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:03:18,429 INFO L93 Difference]: Finished difference Result 563 states and 681 transitions. [2020-07-20 04:03:18,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-07-20 04:03:18,429 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 345 [2020-07-20 04:03:18,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:03:18,432 INFO L225 Difference]: With dead ends: 563 [2020-07-20 04:03:18,432 INFO L226 Difference]: Without dead ends: 418 [2020-07-20 04:03:18,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=4656, Invalid=13434, Unknown=0, NotChecked=0, Total=18090 [2020-07-20 04:03:18,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-07-20 04:03:18,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 286. [2020-07-20 04:03:18,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-07-20 04:03:18,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 305 transitions. [2020-07-20 04:03:18,449 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 305 transitions. Word has length 345 [2020-07-20 04:03:18,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:03:18,450 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 305 transitions. [2020-07-20 04:03:18,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 102 states. [2020-07-20 04:03:18,450 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 305 transitions. [2020-07-20 04:03:18,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-07-20 04:03:18,452 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:03:18,453 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:03:18,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:03:18,666 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:03:18,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:03:18,666 INFO L82 PathProgramCache]: Analyzing trace with hash 2069961333, now seen corresponding path program 49 times [2020-07-20 04:03:18,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:03:18,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227999360] [2020-07-20 04:03:18,666 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:03:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:21,499 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 2244 proven. 1122 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-07-20 04:03:21,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227999360] [2020-07-20 04:03:21,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773630645] [2020-07-20 04:03:21,500 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35e2038b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:03:21,635 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35e2038b issued 3 check-sat command(s) [2020-07-20 04:03:21,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:03:21,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 70 conjunts are in the unsatisfiable core [2020-07-20 04:03:21,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:03:25,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 2244 proven. 1122 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-07-20 04:03:25,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:03:25,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 104 [2020-07-20 04:03:25,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074831539] [2020-07-20 04:03:25,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2020-07-20 04:03:25,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:03:25,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2020-07-20 04:03:25,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2483, Invalid=8229, Unknown=0, NotChecked=0, Total=10712 [2020-07-20 04:03:25,236 INFO L87 Difference]: Start difference. First operand 286 states and 305 transitions. Second operand 104 states. [2020-07-20 04:03:28,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:03:28,837 INFO L93 Difference]: Finished difference Result 567 states and 688 transitions. [2020-07-20 04:03:28,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-07-20 04:03:28,837 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 347 [2020-07-20 04:03:28,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:03:28,839 INFO L225 Difference]: With dead ends: 567 [2020-07-20 04:03:28,839 INFO L226 Difference]: Without dead ends: 424 [2020-07-20 04:03:28,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3861 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=4897, Invalid=14009, Unknown=0, NotChecked=0, Total=18906 [2020-07-20 04:03:28,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-07-20 04:03:28,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 288. [2020-07-20 04:03:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-07-20 04:03:28,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 307 transitions. [2020-07-20 04:03:28,857 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 307 transitions. Word has length 347 [2020-07-20 04:03:28,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:03:28,857 INFO L479 AbstractCegarLoop]: Abstraction has 288 states and 307 transitions. [2020-07-20 04:03:28,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 104 states. [2020-07-20 04:03:28,857 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 307 transitions. [2020-07-20 04:03:28,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-07-20 04:03:28,860 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:03:28,860 INFO L422 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:03:29,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:03:29,074 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:03:29,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:03:29,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1602496550, now seen corresponding path program 50 times [2020-07-20 04:03:29,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:03:29,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373718436] [2020-07-20 04:03:29,074 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:03:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:30,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5546 backedges. 1256 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-07-20 04:03:30,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373718436] [2020-07-20 04:03:30,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035105590] [2020-07-20 04:03:30,272 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2303c9ec No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:03:30,427 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2303c9ec issued 4 check-sat command(s) [2020-07-20 04:03:30,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:03:30,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 71 conjunts are in the unsatisfiable core [2020-07-20 04:03:30,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:03:30,454 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:03:30,589 INFO L134 CoverageAnalysis]: Checked inductivity of 5546 backedges. 1256 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-07-20 04:03:30,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:03:30,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2020-07-20 04:03:30,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159131092] [2020-07-20 04:03:30,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-07-20 04:03:30,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:03:30,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-07-20 04:03:30,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=676, Invalid=964, Unknown=0, NotChecked=0, Total=1640 [2020-07-20 04:03:30,591 INFO L87 Difference]: Start difference. First operand 288 states and 307 transitions. Second operand 41 states. [2020-07-20 04:03:31,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:03:31,116 INFO L93 Difference]: Finished difference Result 303 states and 323 transitions. [2020-07-20 04:03:31,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-07-20 04:03:31,117 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 349 [2020-07-20 04:03:31,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:03:31,119 INFO L225 Difference]: With dead ends: 303 [2020-07-20 04:03:31,119 INFO L226 Difference]: Without dead ends: 301 [2020-07-20 04:03:31,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=682, Invalid=1040, Unknown=0, NotChecked=0, Total=1722 [2020-07-20 04:03:31,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-07-20 04:03:31,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 300. [2020-07-20 04:03:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-07-20 04:03:31,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 320 transitions. [2020-07-20 04:03:31,130 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 320 transitions. Word has length 349 [2020-07-20 04:03:31,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:03:31,131 INFO L479 AbstractCegarLoop]: Abstraction has 300 states and 320 transitions. [2020-07-20 04:03:31,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-07-20 04:03:31,131 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 320 transitions. [2020-07-20 04:03:31,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-07-20 04:03:31,133 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:03:31,133 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 35, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:03:31,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:03:31,347 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:03:31,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:03:31,347 INFO L82 PathProgramCache]: Analyzing trace with hash 242484668, now seen corresponding path program 51 times [2020-07-20 04:03:31,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:03:31,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191880157] [2020-07-20 04:03:31,348 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:03:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:34,534 INFO L134 CoverageAnalysis]: Checked inductivity of 6090 backedges. 2520 proven. 1190 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-07-20 04:03:34,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191880157] [2020-07-20 04:03:34,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852111765] [2020-07-20 04:03:34,535 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7ad51105 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:03:34,674 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7ad51105 issued 3 check-sat command(s) [2020-07-20 04:03:34,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:03:34,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 72 conjunts are in the unsatisfiable core [2020-07-20 04:03:34,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:03:38,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6090 backedges. 2652 proven. 1190 refuted. 0 times theorem prover too weak. 2248 trivial. 0 not checked. [2020-07-20 04:03:38,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:03:38,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72] total 108 [2020-07-20 04:03:38,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026455419] [2020-07-20 04:03:38,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2020-07-20 04:03:38,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:03:38,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2020-07-20 04:03:38,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2663, Invalid=8893, Unknown=0, NotChecked=0, Total=11556 [2020-07-20 04:03:38,651 INFO L87 Difference]: Start difference. First operand 300 states and 320 transitions. Second operand 108 states. [2020-07-20 04:03:41,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:03:41,970 INFO L93 Difference]: Finished difference Result 595 states and 720 transitions. [2020-07-20 04:03:41,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-07-20 04:03:41,970 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 365 [2020-07-20 04:03:41,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:03:41,972 INFO L225 Difference]: With dead ends: 595 [2020-07-20 04:03:41,972 INFO L226 Difference]: Without dead ends: 442 [2020-07-20 04:03:41,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4199 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=5218, Invalid=15088, Unknown=0, NotChecked=0, Total=20306 [2020-07-20 04:03:41,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-07-20 04:03:41,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 302. [2020-07-20 04:03:41,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-07-20 04:03:41,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 322 transitions. [2020-07-20 04:03:41,988 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 322 transitions. Word has length 365 [2020-07-20 04:03:41,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:03:41,988 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 322 transitions. [2020-07-20 04:03:41,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 108 states. [2020-07-20 04:03:41,989 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 322 transitions. [2020-07-20 04:03:41,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-07-20 04:03:41,991 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:03:41,991 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:03:42,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-07-20 04:03:42,221 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:03:42,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:03:42,222 INFO L82 PathProgramCache]: Analyzing trace with hash -814607391, now seen corresponding path program 52 times [2020-07-20 04:03:42,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:03:42,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072090082] [2020-07-20 04:03:42,223 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:03:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-07-20 04:03:45,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072090082] [2020-07-20 04:03:45,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585609071] [2020-07-20 04:03:45,544 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@13ec7567 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:03:45,688 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@13ec7567 issued 3 check-sat command(s) [2020-07-20 04:03:45,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:03:45,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 74 conjunts are in the unsatisfiable core [2020-07-20 04:03:45,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:03:49,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-07-20 04:03:49,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:03:49,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 110 [2020-07-20 04:03:49,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721115315] [2020-07-20 04:03:49,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2020-07-20 04:03:49,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:03:49,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2020-07-20 04:03:49,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2773, Invalid=9217, Unknown=0, NotChecked=0, Total=11990 [2020-07-20 04:03:49,932 INFO L87 Difference]: Start difference. First operand 302 states and 322 transitions. Second operand 110 states. [2020-07-20 04:03:53,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:03:53,556 INFO L93 Difference]: Finished difference Result 599 states and 727 transitions. [2020-07-20 04:03:53,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-07-20 04:03:53,556 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 367 [2020-07-20 04:03:53,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:03:53,558 INFO L225 Difference]: With dead ends: 599 [2020-07-20 04:03:53,558 INFO L226 Difference]: Without dead ends: 448 [2020-07-20 04:03:53,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4340 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=5473, Invalid=15697, Unknown=0, NotChecked=0, Total=21170 [2020-07-20 04:03:53,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-07-20 04:03:53,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 304. [2020-07-20 04:03:53,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-07-20 04:03:53,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 324 transitions. [2020-07-20 04:03:53,583 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 324 transitions. Word has length 367 [2020-07-20 04:03:53,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:03:53,584 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 324 transitions. [2020-07-20 04:03:53,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 110 states. [2020-07-20 04:03:53,584 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 324 transitions. [2020-07-20 04:03:53,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-07-20 04:03:53,586 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:03:53,587 INFO L422 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:03:53,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:03:53,800 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:03:53,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:03:53,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1227173062, now seen corresponding path program 53 times [2020-07-20 04:03:53,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:03:53,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257442860] [2020-07-20 04:03:53,802 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:03:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-07-20 04:03:55,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257442860] [2020-07-20 04:03:55,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084448727] [2020-07-20 04:03:55,218 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2f9df600 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:03:55,381 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2f9df600 issued 4 check-sat command(s) [2020-07-20 04:03:55,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:03:55,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 75 conjunts are in the unsatisfiable core [2020-07-20 04:03:55,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:03:55,403 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:03:55,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-07-20 04:03:55,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:03:55,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2020-07-20 04:03:55,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165435713] [2020-07-20 04:03:55,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-07-20 04:03:55,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:03:55,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-07-20 04:03:55,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=751, Invalid=1055, Unknown=0, NotChecked=0, Total=1806 [2020-07-20 04:03:55,540 INFO L87 Difference]: Start difference. First operand 304 states and 324 transitions. Second operand 43 states. [2020-07-20 04:03:56,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:03:56,221 INFO L93 Difference]: Finished difference Result 319 states and 340 transitions. [2020-07-20 04:03:56,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-07-20 04:03:56,222 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 369 [2020-07-20 04:03:56,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:03:56,224 INFO L225 Difference]: With dead ends: 319 [2020-07-20 04:03:56,224 INFO L226 Difference]: Without dead ends: 317 [2020-07-20 04:03:56,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=757, Invalid=1135, Unknown=0, NotChecked=0, Total=1892 [2020-07-20 04:03:56,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-07-20 04:03:56,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 316. [2020-07-20 04:03:56,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-07-20 04:03:56,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 337 transitions. [2020-07-20 04:03:56,241 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 337 transitions. Word has length 369 [2020-07-20 04:03:56,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:03:56,241 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 337 transitions. [2020-07-20 04:03:56,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-07-20 04:03:56,242 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 337 transitions. [2020-07-20 04:03:56,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-07-20 04:03:56,243 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:03:56,244 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:03:56,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-07-20 04:03:56,445 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:03:56,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:03:56,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1586365096, now seen corresponding path program 54 times [2020-07-20 04:03:56,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:03:56,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354102301] [2020-07-20 04:03:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:03:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:00,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2812 proven. 1332 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-07-20 04:04:00,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354102301] [2020-07-20 04:04:00,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721166363] [2020-07-20 04:04:00,235 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@dc69b0a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:04:00,386 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@dc69b0a issued 3 check-sat command(s) [2020-07-20 04:04:00,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:04:00,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 76 conjunts are in the unsatisfiable core [2020-07-20 04:04:00,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:04:05,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2952 proven. 1332 refuted. 0 times theorem prover too weak. 2524 trivial. 0 not checked. [2020-07-20 04:04:05,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:04:05,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76] total 114 [2020-07-20 04:04:05,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521403236] [2020-07-20 04:04:05,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2020-07-20 04:04:05,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:04:05,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2020-07-20 04:04:05,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2963, Invalid=9919, Unknown=0, NotChecked=0, Total=12882 [2020-07-20 04:04:05,075 INFO L87 Difference]: Start difference. First operand 316 states and 337 transitions. Second operand 114 states. [2020-07-20 04:04:08,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:04:08,758 INFO L93 Difference]: Finished difference Result 627 states and 759 transitions. [2020-07-20 04:04:08,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-07-20 04:04:08,759 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 385 [2020-07-20 04:04:08,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:04:08,761 INFO L225 Difference]: With dead ends: 627 [2020-07-20 04:04:08,762 INFO L226 Difference]: Without dead ends: 466 [2020-07-20 04:04:08,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4698 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=5812, Invalid=16838, Unknown=0, NotChecked=0, Total=22650 [2020-07-20 04:04:08,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-07-20 04:04:08,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 318. [2020-07-20 04:04:08,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-07-20 04:04:08,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 339 transitions. [2020-07-20 04:04:08,782 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 339 transitions. Word has length 385 [2020-07-20 04:04:08,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:04:08,782 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 339 transitions. [2020-07-20 04:04:08,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 114 states. [2020-07-20 04:04:08,782 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 339 transitions. [2020-07-20 04:04:08,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-07-20 04:04:08,785 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:04:08,785 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:04:08,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-07-20 04:04:08,999 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:04:08,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:04:08,999 INFO L82 PathProgramCache]: Analyzing trace with hash -468415411, now seen corresponding path program 55 times [2020-07-20 04:04:09,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:04:09,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101668496] [2020-07-20 04:04:09,000 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:04:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:13,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2812 proven. 1406 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-07-20 04:04:13,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101668496] [2020-07-20 04:04:13,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511452892] [2020-07-20 04:04:13,015 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3b3fef82 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:04:13,163 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3b3fef82 issued 3 check-sat command(s) [2020-07-20 04:04:13,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:04:13,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 78 conjunts are in the unsatisfiable core [2020-07-20 04:04:13,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:04:18,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2812 proven. 1406 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-07-20 04:04:18,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:04:18,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 116 [2020-07-20 04:04:18,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334041460] [2020-07-20 04:04:18,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2020-07-20 04:04:18,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:04:18,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2020-07-20 04:04:18,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3079, Invalid=10261, Unknown=0, NotChecked=0, Total=13340 [2020-07-20 04:04:18,279 INFO L87 Difference]: Start difference. First operand 318 states and 339 transitions. Second operand 116 states. [2020-07-20 04:04:22,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:04:22,430 INFO L93 Difference]: Finished difference Result 631 states and 766 transitions. [2020-07-20 04:04:22,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-07-20 04:04:22,430 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 387 [2020-07-20 04:04:22,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:04:22,433 INFO L225 Difference]: With dead ends: 631 [2020-07-20 04:04:22,433 INFO L226 Difference]: Without dead ends: 472 [2020-07-20 04:04:22,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4847 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=6081, Invalid=17481, Unknown=0, NotChecked=0, Total=23562 [2020-07-20 04:04:22,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-07-20 04:04:22,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 320. [2020-07-20 04:04:22,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-07-20 04:04:22,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 341 transitions. [2020-07-20 04:04:22,455 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 341 transitions. Word has length 387 [2020-07-20 04:04:22,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:04:22,455 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 341 transitions. [2020-07-20 04:04:22,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 116 states. [2020-07-20 04:04:22,456 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 341 transitions. [2020-07-20 04:04:22,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-07-20 04:04:22,458 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:04:22,458 INFO L422 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:04:22,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:04:22,672 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:04:22,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:04:22,672 INFO L82 PathProgramCache]: Analyzing trace with hash 572473522, now seen corresponding path program 56 times [2020-07-20 04:04:22,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:04:22,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6193183] [2020-07-20 04:04:22,673 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:04:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:24,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6958 backedges. 1556 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-07-20 04:04:24,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6193183] [2020-07-20 04:04:24,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933841509] [2020-07-20 04:04:24,461 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a5bfbac No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:04:24,629 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a5bfbac issued 4 check-sat command(s) [2020-07-20 04:04:24,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:04:24,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 79 conjunts are in the unsatisfiable core [2020-07-20 04:04:24,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:04:24,660 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:04:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6958 backedges. 1556 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-07-20 04:04:24,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:04:24,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2020-07-20 04:04:24,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512599291] [2020-07-20 04:04:24,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-07-20 04:04:24,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:04:24,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-07-20 04:04:24,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=830, Invalid=1150, Unknown=0, NotChecked=0, Total=1980 [2020-07-20 04:04:24,881 INFO L87 Difference]: Start difference. First operand 320 states and 341 transitions. Second operand 45 states. [2020-07-20 04:04:25,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:04:25,665 INFO L93 Difference]: Finished difference Result 335 states and 357 transitions. [2020-07-20 04:04:25,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-07-20 04:04:25,667 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 389 [2020-07-20 04:04:25,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:04:25,669 INFO L225 Difference]: With dead ends: 335 [2020-07-20 04:04:25,669 INFO L226 Difference]: Without dead ends: 333 [2020-07-20 04:04:25,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=836, Invalid=1234, Unknown=0, NotChecked=0, Total=2070 [2020-07-20 04:04:25,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-07-20 04:04:25,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 332. [2020-07-20 04:04:25,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-07-20 04:04:25,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 354 transitions. [2020-07-20 04:04:25,688 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 354 transitions. Word has length 389 [2020-07-20 04:04:25,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:04:25,689 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 354 transitions. [2020-07-20 04:04:25,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-07-20 04:04:25,689 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 354 transitions. [2020-07-20 04:04:25,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-07-20 04:04:25,692 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:04:25,692 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 39, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:04:25,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-07-20 04:04:25,906 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:04:25,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:04:25,906 INFO L82 PathProgramCache]: Analyzing trace with hash -73744748, now seen corresponding path program 57 times [2020-07-20 04:04:25,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:04:25,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031883585] [2020-07-20 04:04:25,906 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:04:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:30,310 INFO L134 CoverageAnalysis]: Checked inductivity of 7566 backedges. 3120 proven. 1482 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-07-20 04:04:30,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031883585] [2020-07-20 04:04:30,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105255637] [2020-07-20 04:04:30,311 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7b2d51b4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:04:30,468 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7b2d51b4 issued 3 check-sat command(s) [2020-07-20 04:04:30,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:04:30,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 80 conjunts are in the unsatisfiable core [2020-07-20 04:04:30,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:04:36,111 INFO L134 CoverageAnalysis]: Checked inductivity of 7566 backedges. 3268 proven. 1482 refuted. 0 times theorem prover too weak. 2816 trivial. 0 not checked. [2020-07-20 04:04:36,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:04:36,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 120 [2020-07-20 04:04:36,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196411167] [2020-07-20 04:04:36,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2020-07-20 04:04:36,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:04:36,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2020-07-20 04:04:36,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3279, Invalid=11001, Unknown=0, NotChecked=0, Total=14280 [2020-07-20 04:04:36,114 INFO L87 Difference]: Start difference. First operand 332 states and 354 transitions. Second operand 120 states. [2020-07-20 04:04:40,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:04:40,579 INFO L93 Difference]: Finished difference Result 659 states and 798 transitions. [2020-07-20 04:04:40,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-07-20 04:04:40,579 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 405 [2020-07-20 04:04:40,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:04:40,582 INFO L225 Difference]: With dead ends: 659 [2020-07-20 04:04:40,582 INFO L226 Difference]: Without dead ends: 490 [2020-07-20 04:04:40,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5225 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=6438, Invalid=18684, Unknown=0, NotChecked=0, Total=25122 [2020-07-20 04:04:40,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-07-20 04:04:40,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 334. [2020-07-20 04:04:40,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-07-20 04:04:40,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 356 transitions. [2020-07-20 04:04:40,603 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 356 transitions. Word has length 405 [2020-07-20 04:04:40,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:04:40,603 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 356 transitions. [2020-07-20 04:04:40,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 120 states. [2020-07-20 04:04:40,603 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 356 transitions. [2020-07-20 04:04:40,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-07-20 04:04:40,606 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:04:40,606 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:04:40,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:04:40,814 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:04:40,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:04:40,815 INFO L82 PathProgramCache]: Analyzing trace with hash 2082014137, now seen corresponding path program 58 times [2020-07-20 04:04:40,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:04:40,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908338053] [2020-07-20 04:04:40,815 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:04:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 7644 backedges. 3120 proven. 1560 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-07-20 04:04:45,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908338053] [2020-07-20 04:04:45,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176807339] [2020-07-20 04:04:45,534 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@44606cfd No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:04:45,696 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@44606cfd issued 3 check-sat command(s) [2020-07-20 04:04:45,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:04:45,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 82 conjunts are in the unsatisfiable core [2020-07-20 04:04:45,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:04:51,872 INFO L134 CoverageAnalysis]: Checked inductivity of 7644 backedges. 3120 proven. 1560 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-07-20 04:04:51,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:04:51,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 122 [2020-07-20 04:04:51,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90913593] [2020-07-20 04:04:51,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2020-07-20 04:04:51,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:04:51,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2020-07-20 04:04:51,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3401, Invalid=11361, Unknown=0, NotChecked=0, Total=14762 [2020-07-20 04:04:51,875 INFO L87 Difference]: Start difference. First operand 334 states and 356 transitions. Second operand 122 states. [2020-07-20 04:04:56,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:04:56,711 INFO L93 Difference]: Finished difference Result 663 states and 805 transitions. [2020-07-20 04:04:56,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-07-20 04:04:56,711 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 407 [2020-07-20 04:04:56,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:04:56,714 INFO L225 Difference]: With dead ends: 663 [2020-07-20 04:04:56,714 INFO L226 Difference]: Without dead ends: 496 [2020-07-20 04:04:56,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5382 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=6721, Invalid=19361, Unknown=0, NotChecked=0, Total=26082 [2020-07-20 04:04:56,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-07-20 04:04:56,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 336. [2020-07-20 04:04:56,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-07-20 04:04:56,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 358 transitions. [2020-07-20 04:04:56,737 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 358 transitions. Word has length 407 [2020-07-20 04:04:56,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:04:56,737 INFO L479 AbstractCegarLoop]: Abstraction has 336 states and 358 transitions. [2020-07-20 04:04:56,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 122 states. [2020-07-20 04:04:56,737 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 358 transitions. [2020-07-20 04:04:56,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-07-20 04:04:56,741 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:04:56,741 INFO L422 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:04:56,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2020-07-20 04:04:56,955 INFO L427 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:04:56,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:04:56,956 INFO L82 PathProgramCache]: Analyzing trace with hash -702901346, now seen corresponding path program 59 times [2020-07-20 04:04:56,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:04:56,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211370965] [2020-07-20 04:04:56,957 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:04:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 1718 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-07-20 04:04:59,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211370965] [2020-07-20 04:04:59,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042053594] [2020-07-20 04:04:59,017 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3eb02649 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:04:59,199 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3eb02649 issued 4 check-sat command(s) [2020-07-20 04:04:59,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:04:59,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 1106 conjuncts, 83 conjunts are in the unsatisfiable core [2020-07-20 04:04:59,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:04:59,221 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:04:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 1718 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-07-20 04:04:59,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:04:59,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2020-07-20 04:04:59,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783837444] [2020-07-20 04:04:59,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-07-20 04:04:59,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:04:59,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-07-20 04:04:59,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=913, Invalid=1249, Unknown=0, NotChecked=0, Total=2162 [2020-07-20 04:04:59,458 INFO L87 Difference]: Start difference. First operand 336 states and 358 transitions. Second operand 47 states. [2020-07-20 04:05:00,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:05:00,231 INFO L93 Difference]: Finished difference Result 351 states and 374 transitions. [2020-07-20 04:05:00,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-07-20 04:05:00,232 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 409 [2020-07-20 04:05:00,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:05:00,234 INFO L225 Difference]: With dead ends: 351 [2020-07-20 04:05:00,234 INFO L226 Difference]: Without dead ends: 349 [2020-07-20 04:05:00,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=919, Invalid=1337, Unknown=0, NotChecked=0, Total=2256 [2020-07-20 04:05:00,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-07-20 04:05:00,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 348. [2020-07-20 04:05:00,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-07-20 04:05:00,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 371 transitions. [2020-07-20 04:05:00,248 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 371 transitions. Word has length 409 [2020-07-20 04:05:00,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:05:00,249 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 371 transitions. [2020-07-20 04:05:00,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-07-20 04:05:00,249 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 371 transitions. [2020-07-20 04:05:00,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-07-20 04:05:00,251 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:05:00,251 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 41, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:05:00,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:05:00,453 INFO L427 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:05:00,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:05:00,454 INFO L82 PathProgramCache]: Analyzing trace with hash 524990848, now seen corresponding path program 60 times [2020-07-20 04:05:00,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:05:00,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151682701] [2020-07-20 04:05:00,455 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:05:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:05,806 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 3444 proven. 1640 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-07-20 04:05:05,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151682701] [2020-07-20 04:05:05,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774963373] [2020-07-20 04:05:05,806 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7760cb4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:05:05,969 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7760cb4 issued 3 check-sat command(s) [2020-07-20 04:05:05,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:05:05,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 84 conjunts are in the unsatisfiable core [2020-07-20 04:05:05,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:05:12,847 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 3600 proven. 1640 refuted. 0 times theorem prover too weak. 3124 trivial. 0 not checked. [2020-07-20 04:05:12,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:05:12,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 84] total 126 [2020-07-20 04:05:12,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410559522] [2020-07-20 04:05:12,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2020-07-20 04:05:12,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:05:12,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2020-07-20 04:05:12,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3611, Invalid=12139, Unknown=0, NotChecked=0, Total=15750 [2020-07-20 04:05:12,850 INFO L87 Difference]: Start difference. First operand 348 states and 371 transitions. Second operand 126 states. [2020-07-20 04:05:18,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:05:18,220 INFO L93 Difference]: Finished difference Result 691 states and 837 transitions. [2020-07-20 04:05:18,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-07-20 04:05:18,220 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 425 [2020-07-20 04:05:18,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:05:18,222 INFO L225 Difference]: With dead ends: 691 [2020-07-20 04:05:18,222 INFO L226 Difference]: Without dead ends: 514 [2020-07-20 04:05:18,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5780 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=7096, Invalid=20626, Unknown=0, NotChecked=0, Total=27722 [2020-07-20 04:05:18,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-07-20 04:05:18,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 350. [2020-07-20 04:05:18,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-07-20 04:05:18,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 373 transitions. [2020-07-20 04:05:18,241 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 373 transitions. Word has length 425 [2020-07-20 04:05:18,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:05:18,241 INFO L479 AbstractCegarLoop]: Abstraction has 350 states and 373 transitions. [2020-07-20 04:05:18,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 126 states. [2020-07-20 04:05:18,241 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 373 transitions. [2020-07-20 04:05:18,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-07-20 04:05:18,243 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:05:18,243 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:05:18,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2020-07-20 04:05:18,444 INFO L427 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:05:18,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:05:18,445 INFO L82 PathProgramCache]: Analyzing trace with hash -2129659355, now seen corresponding path program 61 times [2020-07-20 04:05:18,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:05:18,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108639810] [2020-07-20 04:05:18,446 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:05:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:24,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8446 backedges. 3444 proven. 1722 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-07-20 04:05:24,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108639810] [2020-07-20 04:05:24,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225568033] [2020-07-20 04:05:24,082 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@78b29cef No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:05:24,248 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@78b29cef issued 3 check-sat command(s) [2020-07-20 04:05:24,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:05:24,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 86 conjunts are in the unsatisfiable core [2020-07-20 04:05:24,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:05:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 8446 backedges. 3444 proven. 1722 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-07-20 04:05:31,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:05:31,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 128 [2020-07-20 04:05:31,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797517451] [2020-07-20 04:05:31,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2020-07-20 04:05:31,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:05:31,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2020-07-20 04:05:31,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3739, Invalid=12517, Unknown=0, NotChecked=0, Total=16256 [2020-07-20 04:05:31,764 INFO L87 Difference]: Start difference. First operand 350 states and 373 transitions. Second operand 128 states. [2020-07-20 04:05:37,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:05:37,586 INFO L93 Difference]: Finished difference Result 695 states and 844 transitions. [2020-07-20 04:05:37,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-07-20 04:05:37,586 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 427 [2020-07-20 04:05:37,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:05:37,589 INFO L225 Difference]: With dead ends: 695 [2020-07-20 04:05:37,589 INFO L226 Difference]: Without dead ends: 520 [2020-07-20 04:05:37,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5945 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=7393, Invalid=21337, Unknown=0, NotChecked=0, Total=28730 [2020-07-20 04:05:37,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-07-20 04:05:37,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 352. [2020-07-20 04:05:37,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-07-20 04:05:37,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 375 transitions. [2020-07-20 04:05:37,608 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 375 transitions. Word has length 427 [2020-07-20 04:05:37,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:05:37,609 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 375 transitions. [2020-07-20 04:05:37,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 128 states. [2020-07-20 04:05:37,609 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 375 transitions. [2020-07-20 04:05:37,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-07-20 04:05:37,612 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:05:37,612 INFO L422 BasicCegarLoop]: trace histogram [43, 42, 42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:05:37,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:05:37,819 INFO L427 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:05:37,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:05:37,820 INFO L82 PathProgramCache]: Analyzing trace with hash -2037930614, now seen corresponding path program 62 times [2020-07-20 04:05:37,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:05:37,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961756646] [2020-07-20 04:05:37,820 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:05:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:40,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8530 backedges. 1888 proven. 3362 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-07-20 04:05:40,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961756646] [2020-07-20 04:05:40,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555261574] [2020-07-20 04:05:40,085 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a9346d No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:05:40,269 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a9346d issued 4 check-sat command(s) [2020-07-20 04:05:40,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:05:40,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 87 conjunts are in the unsatisfiable core [2020-07-20 04:05:40,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:05:40,298 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:05:40,487 INFO L134 CoverageAnalysis]: Checked inductivity of 8530 backedges. 1888 proven. 3362 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-07-20 04:05:40,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:05:40,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2020-07-20 04:05:40,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696734035] [2020-07-20 04:05:40,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-07-20 04:05:40,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:05:40,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-07-20 04:05:40,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=1352, Unknown=0, NotChecked=0, Total=2352 [2020-07-20 04:05:40,489 INFO L87 Difference]: Start difference. First operand 352 states and 375 transitions. Second operand 49 states. [2020-07-20 04:05:41,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:05:41,454 INFO L93 Difference]: Finished difference Result 367 states and 391 transitions. [2020-07-20 04:05:41,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-07-20 04:05:41,456 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 429 [2020-07-20 04:05:41,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:05:41,459 INFO L225 Difference]: With dead ends: 367 [2020-07-20 04:05:41,459 INFO L226 Difference]: Without dead ends: 365 [2020-07-20 04:05:41,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1006, Invalid=1444, Unknown=0, NotChecked=0, Total=2450 [2020-07-20 04:05:41,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-07-20 04:05:41,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 364. [2020-07-20 04:05:41,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-07-20 04:05:41,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 388 transitions. [2020-07-20 04:05:41,475 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 388 transitions. Word has length 429 [2020-07-20 04:05:41,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:05:41,476 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 388 transitions. [2020-07-20 04:05:41,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-07-20 04:05:41,476 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 388 transitions. [2020-07-20 04:05:41,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-07-20 04:05:41,478 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:05:41,478 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 43, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:05:41,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2020-07-20 04:05:41,679 INFO L427 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:05:41,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:05:41,680 INFO L82 PathProgramCache]: Analyzing trace with hash -99716244, now seen corresponding path program 63 times [2020-07-20 04:05:41,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:05:41,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343331112] [2020-07-20 04:05:41,681 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:05:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:05:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9202 backedges. 3784 proven. 1806 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-07-20 04:05:47,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343331112] [2020-07-20 04:05:47,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014932510] [2020-07-20 04:05:47,981 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77660912 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:05:48,155 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77660912 issued 3 check-sat command(s) [2020-07-20 04:05:48,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:05:48,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 88 conjunts are in the unsatisfiable core [2020-07-20 04:05:48,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:05:56,499 INFO L134 CoverageAnalysis]: Checked inductivity of 9202 backedges. 3948 proven. 1806 refuted. 0 times theorem prover too weak. 3448 trivial. 0 not checked. [2020-07-20 04:05:56,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:05:56,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 132 [2020-07-20 04:05:56,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642312595] [2020-07-20 04:05:56,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2020-07-20 04:05:56,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:05:56,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2020-07-20 04:05:56,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3959, Invalid=13333, Unknown=0, NotChecked=0, Total=17292 [2020-07-20 04:05:56,503 INFO L87 Difference]: Start difference. First operand 364 states and 388 transitions. Second operand 132 states. [2020-07-20 04:06:02,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:06:02,934 INFO L93 Difference]: Finished difference Result 723 states and 876 transitions. [2020-07-20 04:06:02,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-07-20 04:06:02,935 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 445 [2020-07-20 04:06:02,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:06:02,937 INFO L225 Difference]: With dead ends: 723 [2020-07-20 04:06:02,937 INFO L226 Difference]: Without dead ends: 538 [2020-07-20 04:06:02,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6363 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=7786, Invalid=22664, Unknown=0, NotChecked=0, Total=30450 [2020-07-20 04:06:02,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-07-20 04:06:02,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 366. [2020-07-20 04:06:02,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-07-20 04:06:02,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 390 transitions. [2020-07-20 04:06:02,955 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 390 transitions. Word has length 445 [2020-07-20 04:06:02,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:06:02,956 INFO L479 AbstractCegarLoop]: Abstraction has 366 states and 390 transitions. [2020-07-20 04:06:02,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 132 states. [2020-07-20 04:06:02,956 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 390 transitions. [2020-07-20 04:06:02,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-07-20 04:06:02,958 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:06:02,958 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:06:03,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:06:03,163 INFO L427 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:06:03,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:06:03,163 INFO L82 PathProgramCache]: Analyzing trace with hash 592048017, now seen corresponding path program 64 times [2020-07-20 04:06:03,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:06:03,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578315909] [2020-07-20 04:06:03,164 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:06:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:10,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 3784 proven. 1892 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-07-20 04:06:10,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578315909] [2020-07-20 04:06:10,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737199125] [2020-07-20 04:06:10,215 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@534ab972 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:06:10,383 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@534ab972 issued 3 check-sat command(s) [2020-07-20 04:06:10,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:06:10,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 90 conjunts are in the unsatisfiable core [2020-07-20 04:06:10,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:06:19,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 3784 proven. 1892 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-07-20 04:06:19,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:06:19,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 134 [2020-07-20 04:06:19,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407569940] [2020-07-20 04:06:19,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2020-07-20 04:06:19,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:06:19,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2020-07-20 04:06:19,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4093, Invalid=13729, Unknown=0, NotChecked=0, Total=17822 [2020-07-20 04:06:19,344 INFO L87 Difference]: Start difference. First operand 366 states and 390 transitions. Second operand 134 states. [2020-07-20 04:06:26,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:06:26,298 INFO L93 Difference]: Finished difference Result 727 states and 883 transitions. [2020-07-20 04:06:26,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-07-20 04:06:26,298 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 447 [2020-07-20 04:06:26,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:06:26,300 INFO L225 Difference]: With dead ends: 727 [2020-07-20 04:06:26,300 INFO L226 Difference]: Without dead ends: 544 [2020-07-20 04:06:26,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6536 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=8097, Invalid=23409, Unknown=0, NotChecked=0, Total=31506 [2020-07-20 04:06:26,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-07-20 04:06:26,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 368. [2020-07-20 04:06:26,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-07-20 04:06:26,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 392 transitions. [2020-07-20 04:06:26,325 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 392 transitions. Word has length 447 [2020-07-20 04:06:26,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:06:26,326 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 392 transitions. [2020-07-20 04:06:26,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 134 states. [2020-07-20 04:06:26,326 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 392 transitions. [2020-07-20 04:06:26,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-07-20 04:06:26,329 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:06:26,329 INFO L422 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:06:26,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2020-07-20 04:06:26,545 INFO L427 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:06:26,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:06:26,545 INFO L82 PathProgramCache]: Analyzing trace with hash -342428042, now seen corresponding path program 65 times [2020-07-20 04:06:26,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:06:26,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351875630] [2020-07-20 04:06:26,545 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:06:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:29,292 INFO L134 CoverageAnalysis]: Checked inductivity of 9376 backedges. 2066 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-07-20 04:06:29,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351875630] [2020-07-20 04:06:29,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109058735] [2020-07-20 04:06:29,292 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5c8f7254 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:06:29,487 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5c8f7254 issued 4 check-sat command(s) [2020-07-20 04:06:29,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:06:29,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 91 conjunts are in the unsatisfiable core [2020-07-20 04:06:29,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:06:29,519 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:06:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 9376 backedges. 2066 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-07-20 04:06:29,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:06:29,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2020-07-20 04:06:29,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729875034] [2020-07-20 04:06:29,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-07-20 04:06:29,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:06:29,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-07-20 04:06:29,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1091, Invalid=1459, Unknown=0, NotChecked=0, Total=2550 [2020-07-20 04:06:29,763 INFO L87 Difference]: Start difference. First operand 368 states and 392 transitions. Second operand 51 states. [2020-07-20 04:06:30,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:06:30,998 INFO L93 Difference]: Finished difference Result 383 states and 408 transitions. [2020-07-20 04:06:31,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-07-20 04:06:31,000 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 449 [2020-07-20 04:06:31,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:06:31,003 INFO L225 Difference]: With dead ends: 383 [2020-07-20 04:06:31,003 INFO L226 Difference]: Without dead ends: 381 [2020-07-20 04:06:31,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 579 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1097, Invalid=1555, Unknown=0, NotChecked=0, Total=2652 [2020-07-20 04:06:31,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-07-20 04:06:31,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 380. [2020-07-20 04:06:31,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-07-20 04:06:31,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 405 transitions. [2020-07-20 04:06:31,019 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 405 transitions. Word has length 449 [2020-07-20 04:06:31,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:06:31,019 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 405 transitions. [2020-07-20 04:06:31,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-07-20 04:06:31,020 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 405 transitions. [2020-07-20 04:06:31,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-07-20 04:06:31,022 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:06:31,022 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 45, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:06:31,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-07-20 04:06:31,223 INFO L427 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:06:31,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:06:31,223 INFO L82 PathProgramCache]: Analyzing trace with hash -753505192, now seen corresponding path program 66 times [2020-07-20 04:06:31,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:06:31,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060549777] [2020-07-20 04:06:31,224 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:06:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:06:38,902 INFO L134 CoverageAnalysis]: Checked inductivity of 10080 backedges. 4140 proven. 1980 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-07-20 04:06:38,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060549777] [2020-07-20 04:06:38,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115520187] [2020-07-20 04:06:38,903 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@493ee179 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:06:39,105 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@493ee179 issued 3 check-sat command(s) [2020-07-20 04:06:39,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:06:39,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 92 conjunts are in the unsatisfiable core [2020-07-20 04:06:39,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:06:49,145 INFO L134 CoverageAnalysis]: Checked inductivity of 10080 backedges. 4312 proven. 1980 refuted. 0 times theorem prover too weak. 3788 trivial. 0 not checked. [2020-07-20 04:06:49,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:06:49,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 138 [2020-07-20 04:06:49,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767868184] [2020-07-20 04:06:49,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states [2020-07-20 04:06:49,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:06:49,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2020-07-20 04:06:49,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4323, Invalid=14583, Unknown=0, NotChecked=0, Total=18906 [2020-07-20 04:06:49,148 INFO L87 Difference]: Start difference. First operand 380 states and 405 transitions. Second operand 138 states. [2020-07-20 04:06:56,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:06:56,673 INFO L93 Difference]: Finished difference Result 755 states and 915 transitions. [2020-07-20 04:06:56,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-07-20 04:06:56,673 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 465 [2020-07-20 04:06:56,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:06:56,675 INFO L225 Difference]: With dead ends: 755 [2020-07-20 04:06:56,676 INFO L226 Difference]: Without dead ends: 562 [2020-07-20 04:06:56,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6974 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=8508, Invalid=24798, Unknown=0, NotChecked=0, Total=33306 [2020-07-20 04:06:56,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-07-20 04:06:56,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 382. [2020-07-20 04:06:56,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-07-20 04:06:56,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 407 transitions. [2020-07-20 04:06:56,693 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 407 transitions. Word has length 465 [2020-07-20 04:06:56,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:06:56,694 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 407 transitions. [2020-07-20 04:06:56,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 138 states. [2020-07-20 04:06:56,694 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 407 transitions. [2020-07-20 04:06:56,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-07-20 04:06:56,697 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:06:56,698 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:06:56,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2020-07-20 04:06:56,912 INFO L427 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:06:56,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:06:56,913 INFO L82 PathProgramCache]: Analyzing trace with hash -103324675, now seen corresponding path program 67 times [2020-07-20 04:06:56,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:06:56,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408124980] [2020-07-20 04:06:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:06:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:05,289 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4140 proven. 2070 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-07-20 04:07:05,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408124980] [2020-07-20 04:07:05,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636508635] [2020-07-20 04:07:05,290 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58e9a4a5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:07:05,468 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58e9a4a5 issued 3 check-sat command(s) [2020-07-20 04:07:05,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:07:05,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 94 conjunts are in the unsatisfiable core [2020-07-20 04:07:05,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:07:16,555 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4140 proven. 2070 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-07-20 04:07:16,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:07:16,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 140 [2020-07-20 04:07:16,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585165603] [2020-07-20 04:07:16,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2020-07-20 04:07:16,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:07:16,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2020-07-20 04:07:16,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4463, Invalid=14997, Unknown=0, NotChecked=0, Total=19460 [2020-07-20 04:07:16,558 INFO L87 Difference]: Start difference. First operand 382 states and 407 transitions. Second operand 140 states. [2020-07-20 04:07:24,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:07:24,997 INFO L93 Difference]: Finished difference Result 759 states and 922 transitions. [2020-07-20 04:07:24,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2020-07-20 04:07:24,998 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 467 [2020-07-20 04:07:24,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:07:25,001 INFO L225 Difference]: With dead ends: 759 [2020-07-20 04:07:25,001 INFO L226 Difference]: Without dead ends: 568 [2020-07-20 04:07:25,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7155 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=8833, Invalid=25577, Unknown=0, NotChecked=0, Total=34410 [2020-07-20 04:07:25,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-07-20 04:07:25,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 384. [2020-07-20 04:07:25,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-07-20 04:07:25,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 409 transitions. [2020-07-20 04:07:25,019 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 409 transitions. Word has length 467 [2020-07-20 04:07:25,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:07:25,020 INFO L479 AbstractCegarLoop]: Abstraction has 384 states and 409 transitions. [2020-07-20 04:07:25,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 140 states. [2020-07-20 04:07:25,020 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 409 transitions. [2020-07-20 04:07:25,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-07-20 04:07:25,022 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:07:25,022 INFO L422 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:07:25,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:07:25,223 INFO L427 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:07:25,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:07:25,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1949894242, now seen corresponding path program 68 times [2020-07-20 04:07:25,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:07:25,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755625022] [2020-07-20 04:07:25,225 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:07:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2252 proven. 4050 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-07-20 04:07:28,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755625022] [2020-07-20 04:07:28,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036103906] [2020-07-20 04:07:28,723 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5824f24a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:07:28,913 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5824f24a issued 4 check-sat command(s) [2020-07-20 04:07:28,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:07:28,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 95 conjunts are in the unsatisfiable core [2020-07-20 04:07:28,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:07:28,943 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:07:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2252 proven. 4050 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-07-20 04:07:29,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:07:29,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2020-07-20 04:07:29,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230505790] [2020-07-20 04:07:29,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-07-20 04:07:29,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:07:29,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-07-20 04:07:29,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1186, Invalid=1570, Unknown=0, NotChecked=0, Total=2756 [2020-07-20 04:07:29,209 INFO L87 Difference]: Start difference. First operand 384 states and 409 transitions. Second operand 53 states. [2020-07-20 04:07:30,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:07:30,659 INFO L93 Difference]: Finished difference Result 399 states and 425 transitions. [2020-07-20 04:07:30,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-07-20 04:07:30,661 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 469 [2020-07-20 04:07:30,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:07:30,664 INFO L225 Difference]: With dead ends: 399 [2020-07-20 04:07:30,664 INFO L226 Difference]: Without dead ends: 397 [2020-07-20 04:07:30,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1192, Invalid=1670, Unknown=0, NotChecked=0, Total=2862 [2020-07-20 04:07:30,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-07-20 04:07:30,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 396. [2020-07-20 04:07:30,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-07-20 04:07:30,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 422 transitions. [2020-07-20 04:07:30,679 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 422 transitions. Word has length 469 [2020-07-20 04:07:30,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:07:30,680 INFO L479 AbstractCegarLoop]: Abstraction has 396 states and 422 transitions. [2020-07-20 04:07:30,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-07-20 04:07:30,680 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 422 transitions. [2020-07-20 04:07:30,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-07-20 04:07:30,683 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:07:30,683 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:07:30,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:07:30,894 INFO L427 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:07:30,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:07:30,895 INFO L82 PathProgramCache]: Analyzing trace with hash 676537412, now seen corresponding path program 69 times [2020-07-20 04:07:30,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:07:30,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171459590] [2020-07-20 04:07:30,896 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:07:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:07:40,193 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4512 proven. 2162 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-07-20 04:07:40,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171459590] [2020-07-20 04:07:40,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430726976] [2020-07-20 04:07:40,193 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10e1f032 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:07:40,395 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10e1f032 issued 3 check-sat command(s) [2020-07-20 04:07:40,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:07:40,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 96 conjunts are in the unsatisfiable core [2020-07-20 04:07:40,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:07:52,609 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4692 proven. 2162 refuted. 0 times theorem prover too weak. 4144 trivial. 0 not checked. [2020-07-20 04:07:52,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:07:52,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 96] total 144 [2020-07-20 04:07:52,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572251147] [2020-07-20 04:07:52,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2020-07-20 04:07:52,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:07:52,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2020-07-20 04:07:52,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4703, Invalid=15889, Unknown=0, NotChecked=0, Total=20592 [2020-07-20 04:07:52,612 INFO L87 Difference]: Start difference. First operand 396 states and 422 transitions. Second operand 144 states. [2020-07-20 04:08:02,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:08:02,228 INFO L93 Difference]: Finished difference Result 787 states and 954 transitions. [2020-07-20 04:08:02,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-07-20 04:08:02,228 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 485 [2020-07-20 04:08:02,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:08:02,230 INFO L225 Difference]: With dead ends: 787 [2020-07-20 04:08:02,231 INFO L226 Difference]: Without dead ends: 586 [2020-07-20 04:08:02,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7613 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=9262, Invalid=27028, Unknown=0, NotChecked=0, Total=36290 [2020-07-20 04:08:02,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-07-20 04:08:02,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 398. [2020-07-20 04:08:02,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-07-20 04:08:02,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 424 transitions. [2020-07-20 04:08:02,249 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 424 transitions. Word has length 485 [2020-07-20 04:08:02,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:08:02,250 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 424 transitions. [2020-07-20 04:08:02,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 144 states. [2020-07-20 04:08:02,250 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 424 transitions. [2020-07-20 04:08:02,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2020-07-20 04:08:02,252 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:08:02,252 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:08:02,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:08:02,453 INFO L427 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:08:02,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:08:02,454 INFO L82 PathProgramCache]: Analyzing trace with hash 579393385, now seen corresponding path program 70 times [2020-07-20 04:08:02,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:08:02,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099333569] [2020-07-20 04:08:02,455 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:08:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:12,490 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 4512 proven. 2256 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-07-20 04:08:12,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099333569] [2020-07-20 04:08:12,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494341761] [2020-07-20 04:08:12,491 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4e1515dc No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:08:12,676 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4e1515dc issued 3 check-sat command(s) [2020-07-20 04:08:12,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:08:12,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 98 conjunts are in the unsatisfiable core [2020-07-20 04:08:12,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:08:26,207 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 4512 proven. 2256 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-07-20 04:08:26,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:08:26,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 146 [2020-07-20 04:08:26,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366801382] [2020-07-20 04:08:26,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 146 states [2020-07-20 04:08:26,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:08:26,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2020-07-20 04:08:26,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4849, Invalid=16321, Unknown=0, NotChecked=0, Total=21170 [2020-07-20 04:08:26,210 INFO L87 Difference]: Start difference. First operand 398 states and 424 transitions. Second operand 146 states. [2020-07-20 04:08:35,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:08:35,711 INFO L93 Difference]: Finished difference Result 791 states and 961 transitions. [2020-07-20 04:08:35,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2020-07-20 04:08:35,711 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 487 [2020-07-20 04:08:35,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:08:35,714 INFO L225 Difference]: With dead ends: 791 [2020-07-20 04:08:35,714 INFO L226 Difference]: Without dead ends: 592 [2020-07-20 04:08:35,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7802 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=9601, Invalid=27841, Unknown=0, NotChecked=0, Total=37442 [2020-07-20 04:08:35,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-07-20 04:08:35,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 400. [2020-07-20 04:08:35,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-07-20 04:08:35,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 426 transitions. [2020-07-20 04:08:35,733 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 426 transitions. Word has length 487 [2020-07-20 04:08:35,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:08:35,734 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 426 transitions. [2020-07-20 04:08:35,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 146 states. [2020-07-20 04:08:35,734 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 426 transitions. [2020-07-20 04:08:35,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-07-20 04:08:35,736 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:08:35,737 INFO L422 BasicCegarLoop]: trace histogram [49, 48, 48, 48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:08:35,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2020-07-20 04:08:35,938 INFO L427 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:08:35,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:08:35,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1713263950, now seen corresponding path program 71 times [2020-07-20 04:08:35,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:08:35,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266966282] [2020-07-20 04:08:35,939 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:08:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 11188 backedges. 2446 proven. 4418 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-07-20 04:08:39,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266966282] [2020-07-20 04:08:39,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056134488] [2020-07-20 04:08:39,970 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@46559a43 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:08:40,186 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@46559a43 issued 4 check-sat command(s) [2020-07-20 04:08:40,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:08:40,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 99 conjunts are in the unsatisfiable core [2020-07-20 04:08:40,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:08:40,236 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:08:40,510 INFO L134 CoverageAnalysis]: Checked inductivity of 11188 backedges. 2446 proven. 4418 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-07-20 04:08:40,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:08:40,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2020-07-20 04:08:40,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681969468] [2020-07-20 04:08:40,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-07-20 04:08:40,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:08:40,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-07-20 04:08:40,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1285, Invalid=1685, Unknown=0, NotChecked=0, Total=2970 [2020-07-20 04:08:40,512 INFO L87 Difference]: Start difference. First operand 400 states and 426 transitions. Second operand 55 states. [2020-07-20 04:08:42,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:08:42,547 INFO L93 Difference]: Finished difference Result 415 states and 442 transitions. [2020-07-20 04:08:42,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-07-20 04:08:42,551 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 489 [2020-07-20 04:08:42,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:08:42,554 INFO L225 Difference]: With dead ends: 415 [2020-07-20 04:08:42,555 INFO L226 Difference]: Without dead ends: 413 [2020-07-20 04:08:42,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1291, Invalid=1789, Unknown=0, NotChecked=0, Total=3080 [2020-07-20 04:08:42,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-07-20 04:08:42,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 412. [2020-07-20 04:08:42,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-07-20 04:08:42,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 439 transitions. [2020-07-20 04:08:42,575 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 439 transitions. Word has length 489 [2020-07-20 04:08:42,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:08:42,575 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 439 transitions. [2020-07-20 04:08:42,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-07-20 04:08:42,575 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 439 transitions. [2020-07-20 04:08:42,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2020-07-20 04:08:42,578 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:08:42,578 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 49, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:08:42,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:08:42,779 INFO L427 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:08:42,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:08:42,780 INFO L82 PathProgramCache]: Analyzing trace with hash -831186128, now seen corresponding path program 72 times [2020-07-20 04:08:42,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:08:42,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066877937] [2020-07-20 04:08:42,781 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:08:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:08:54,120 INFO L134 CoverageAnalysis]: Checked inductivity of 11956 backedges. 4900 proven. 2352 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-07-20 04:08:54,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066877937] [2020-07-20 04:08:54,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495887592] [2020-07-20 04:08:54,120 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4c191993 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:08:54,316 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4c191993 issued 3 check-sat command(s) [2020-07-20 04:08:54,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:08:54,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 1200 conjuncts, 100 conjunts are in the unsatisfiable core [2020-07-20 04:08:54,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:09:09,509 INFO L134 CoverageAnalysis]: Checked inductivity of 11956 backedges. 5088 proven. 2352 refuted. 0 times theorem prover too weak. 4516 trivial. 0 not checked. [2020-07-20 04:09:09,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:09:09,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 100] total 150 [2020-07-20 04:09:09,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040633271] [2020-07-20 04:09:09,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 150 states [2020-07-20 04:09:09,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:09:09,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2020-07-20 04:09:09,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5099, Invalid=17251, Unknown=0, NotChecked=0, Total=22350 [2020-07-20 04:09:09,513 INFO L87 Difference]: Start difference. First operand 412 states and 439 transitions. Second operand 150 states. [2020-07-20 04:09:21,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:09:21,437 INFO L93 Difference]: Finished difference Result 819 states and 993 transitions. [2020-07-20 04:09:21,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2020-07-20 04:09:21,437 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 505 [2020-07-20 04:09:21,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:09:21,440 INFO L225 Difference]: With dead ends: 819 [2020-07-20 04:09:21,440 INFO L226 Difference]: Without dead ends: 610 [2020-07-20 04:09:21,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8280 ImplicationChecksByTransitivity, 30.7s TimeCoverageRelationStatistics Valid=10048, Invalid=29354, Unknown=0, NotChecked=0, Total=39402 [2020-07-20 04:09:21,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-07-20 04:09:21,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 414. [2020-07-20 04:09:21,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-07-20 04:09:21,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 441 transitions. [2020-07-20 04:09:21,459 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 441 transitions. Word has length 505 [2020-07-20 04:09:21,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:09:21,459 INFO L479 AbstractCegarLoop]: Abstraction has 414 states and 441 transitions. [2020-07-20 04:09:21,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 150 states. [2020-07-20 04:09:21,459 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 441 transitions. [2020-07-20 04:09:21,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-07-20 04:09:21,463 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:09:21,463 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:09:21,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:09:21,669 INFO L427 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:09:21,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:09:21,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1643039189, now seen corresponding path program 73 times [2020-07-20 04:09:21,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:09:21,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380655758] [2020-07-20 04:09:21,670 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:09:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:09:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 4900 proven. 2450 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-07-20 04:09:33,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380655758] [2020-07-20 04:09:33,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569092573] [2020-07-20 04:09:33,850 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a9a1e3b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:09:34,046 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a9a1e3b issued 3 check-sat command(s) [2020-07-20 04:09:34,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:09:34,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 102 conjunts are in the unsatisfiable core [2020-07-20 04:09:34,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:09:50,763 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 4900 proven. 2450 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-07-20 04:09:50,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:09:50,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 152 [2020-07-20 04:09:50,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682517960] [2020-07-20 04:09:50,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2020-07-20 04:09:50,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:09:50,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2020-07-20 04:09:50,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5251, Invalid=17701, Unknown=0, NotChecked=0, Total=22952 [2020-07-20 04:09:50,766 INFO L87 Difference]: Start difference. First operand 414 states and 441 transitions. Second operand 152 states. [2020-07-20 04:10:03,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:10:03,589 INFO L93 Difference]: Finished difference Result 823 states and 1000 transitions. [2020-07-20 04:10:03,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-07-20 04:10:03,590 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 507 [2020-07-20 04:10:03,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:10:03,593 INFO L225 Difference]: With dead ends: 823 [2020-07-20 04:10:03,593 INFO L226 Difference]: Without dead ends: 616 [2020-07-20 04:10:03,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8477 ImplicationChecksByTransitivity, 33.4s TimeCoverageRelationStatistics Valid=10401, Invalid=30201, Unknown=0, NotChecked=0, Total=40602 [2020-07-20 04:10:03,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2020-07-20 04:10:03,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 416. [2020-07-20 04:10:03,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-07-20 04:10:03,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 443 transitions. [2020-07-20 04:10:03,623 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 443 transitions. Word has length 507 [2020-07-20 04:10:03,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:10:03,623 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 443 transitions. [2020-07-20 04:10:03,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 152 states. [2020-07-20 04:10:03,623 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 443 transitions. [2020-07-20 04:10:03,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2020-07-20 04:10:03,626 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:10:03,626 INFO L422 BasicCegarLoop]: trace histogram [51, 50, 50, 50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:10:03,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:10:03,827 INFO L427 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:10:03,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:10:03,828 INFO L82 PathProgramCache]: Analyzing trace with hash -38313158, now seen corresponding path program 74 times [2020-07-20 04:10:03,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:10:03,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502338379] [2020-07-20 04:10:03,829 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:10:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:08,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12154 backedges. 2648 proven. 4802 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-07-20 04:10:08,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502338379] [2020-07-20 04:10:08,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355783103] [2020-07-20 04:10:08,933 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d1048aa No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:10:09,155 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d1048aa issued 4 check-sat command(s) [2020-07-20 04:10:09,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:10:09,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 103 conjunts are in the unsatisfiable core [2020-07-20 04:10:09,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:10:09,181 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:10:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 12154 backedges. 2648 proven. 4802 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-07-20 04:10:09,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:10:09,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2020-07-20 04:10:09,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718919864] [2020-07-20 04:10:09,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-07-20 04:10:09,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:10:09,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-07-20 04:10:09,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1388, Invalid=1804, Unknown=0, NotChecked=0, Total=3192 [2020-07-20 04:10:09,514 INFO L87 Difference]: Start difference. First operand 416 states and 443 transitions. Second operand 57 states. [2020-07-20 04:10:11,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:10:11,669 INFO L93 Difference]: Finished difference Result 431 states and 459 transitions. [2020-07-20 04:10:11,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-07-20 04:10:11,673 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 509 [2020-07-20 04:10:11,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:10:11,676 INFO L225 Difference]: With dead ends: 431 [2020-07-20 04:10:11,676 INFO L226 Difference]: Without dead ends: 429 [2020-07-20 04:10:11,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1394, Invalid=1912, Unknown=0, NotChecked=0, Total=3306 [2020-07-20 04:10:11,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-07-20 04:10:11,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 428. [2020-07-20 04:10:11,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-07-20 04:10:11,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 456 transitions. [2020-07-20 04:10:11,700 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 456 transitions. Word has length 509 [2020-07-20 04:10:11,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:10:11,700 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 456 transitions. [2020-07-20 04:10:11,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-07-20 04:10:11,701 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 456 transitions. [2020-07-20 04:10:11,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2020-07-20 04:10:11,703 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:10:11,704 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 51, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:10:11,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2020-07-20 04:10:11,907 INFO L427 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:10:11,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:10:11,908 INFO L82 PathProgramCache]: Analyzing trace with hash 283955484, now seen corresponding path program 75 times [2020-07-20 04:10:11,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:10:11,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549302997] [2020-07-20 04:10:11,908 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:10:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:10:25,810 INFO L134 CoverageAnalysis]: Checked inductivity of 12954 backedges. 5304 proven. 2550 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-07-20 04:10:25,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549302997] [2020-07-20 04:10:25,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439791936] [2020-07-20 04:10:25,811 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3eb33faf No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:10:26,014 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3eb33faf issued 3 check-sat command(s) [2020-07-20 04:10:26,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:10:26,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 1248 conjuncts, 104 conjunts are in the unsatisfiable core [2020-07-20 04:10:26,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:10:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 12954 backedges. 5500 proven. 2550 refuted. 0 times theorem prover too weak. 4904 trivial. 0 not checked. [2020-07-20 04:10:45,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:10:45,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104] total 156 [2020-07-20 04:10:45,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153950875] [2020-07-20 04:10:45,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 156 states [2020-07-20 04:10:45,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:10:45,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2020-07-20 04:10:45,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5511, Invalid=18669, Unknown=0, NotChecked=0, Total=24180 [2020-07-20 04:10:45,140 INFO L87 Difference]: Start difference. First operand 428 states and 456 transitions. Second operand 156 states. [2020-07-20 04:10:59,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:10:59,271 INFO L93 Difference]: Finished difference Result 851 states and 1032 transitions. [2020-07-20 04:10:59,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2020-07-20 04:10:59,271 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 525 [2020-07-20 04:10:59,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:10:59,275 INFO L225 Difference]: With dead ends: 851 [2020-07-20 04:10:59,275 INFO L226 Difference]: Without dead ends: 634 [2020-07-20 04:10:59,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 579 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8975 ImplicationChecksByTransitivity, 38.3s TimeCoverageRelationStatistics Valid=10866, Invalid=31776, Unknown=0, NotChecked=0, Total=42642 [2020-07-20 04:10:59,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-07-20 04:10:59,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 430. [2020-07-20 04:10:59,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-07-20 04:10:59,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 458 transitions. [2020-07-20 04:10:59,297 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 458 transitions. Word has length 525 [2020-07-20 04:10:59,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:10:59,298 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 458 transitions. [2020-07-20 04:10:59,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 156 states. [2020-07-20 04:10:59,298 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 458 transitions. [2020-07-20 04:10:59,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2020-07-20 04:10:59,300 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:10:59,301 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 51, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:10:59,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:10:59,501 INFO L427 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:10:59,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:10:59,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1129954113, now seen corresponding path program 76 times [2020-07-20 04:10:59,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:10:59,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143266949] [2020-07-20 04:10:59,503 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:10:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:14,966 INFO L134 CoverageAnalysis]: Checked inductivity of 13056 backedges. 5304 proven. 2652 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-07-20 04:11:14,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143266949] [2020-07-20 04:11:14,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704572665] [2020-07-20 04:11:14,967 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@51ccb1dc No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:11:15,178 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@51ccb1dc issued 3 check-sat command(s) [2020-07-20 04:11:15,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:11:15,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 106 conjunts are in the unsatisfiable core [2020-07-20 04:11:15,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:11:36,132 INFO L134 CoverageAnalysis]: Checked inductivity of 13056 backedges. 5304 proven. 2652 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-07-20 04:11:36,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:11:36,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 158 [2020-07-20 04:11:36,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216910150] [2020-07-20 04:11:36,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 158 states [2020-07-20 04:11:36,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:11:36,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2020-07-20 04:11:36,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5669, Invalid=19137, Unknown=0, NotChecked=0, Total=24806 [2020-07-20 04:11:36,135 INFO L87 Difference]: Start difference. First operand 430 states and 458 transitions. Second operand 158 states. [2020-07-20 04:11:51,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:11:51,504 INFO L93 Difference]: Finished difference Result 855 states and 1039 transitions. [2020-07-20 04:11:51,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2020-07-20 04:11:51,504 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 527 [2020-07-20 04:11:51,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:11:51,507 INFO L225 Difference]: With dead ends: 855 [2020-07-20 04:11:51,508 INFO L226 Difference]: Without dead ends: 640 [2020-07-20 04:11:51,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9180 ImplicationChecksByTransitivity, 41.9s TimeCoverageRelationStatistics Valid=11233, Invalid=32657, Unknown=0, NotChecked=0, Total=43890 [2020-07-20 04:11:51,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2020-07-20 04:11:51,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 432. [2020-07-20 04:11:51,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2020-07-20 04:11:51,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 460 transitions. [2020-07-20 04:11:51,542 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 460 transitions. Word has length 527 [2020-07-20 04:11:51,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:11:51,543 INFO L479 AbstractCegarLoop]: Abstraction has 432 states and 460 transitions. [2020-07-20 04:11:51,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 158 states. [2020-07-20 04:11:51,543 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 460 transitions. [2020-07-20 04:11:51,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2020-07-20 04:11:51,547 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:11:51,548 INFO L422 BasicCegarLoop]: trace histogram [53, 52, 52, 52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:11:51,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:11:51,761 INFO L427 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:11:51,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:11:51,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1909149658, now seen corresponding path program 77 times [2020-07-20 04:11:51,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:11:51,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188434586] [2020-07-20 04:11:51,762 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:11:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:11:57,365 INFO L134 CoverageAnalysis]: Checked inductivity of 13160 backedges. 2858 proven. 5202 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-07-20 04:11:57,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188434586] [2020-07-20 04:11:57,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833844592] [2020-07-20 04:11:57,366 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1ecf264c No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:11:57,580 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1ecf264c issued 4 check-sat command(s) [2020-07-20 04:11:57,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:11:57,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 107 conjunts are in the unsatisfiable core [2020-07-20 04:11:57,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:11:57,611 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:11:57,941 INFO L134 CoverageAnalysis]: Checked inductivity of 13160 backedges. 2858 proven. 5202 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-07-20 04:11:57,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:11:57,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 59 [2020-07-20 04:11:57,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135498393] [2020-07-20 04:11:57,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-07-20 04:11:57,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:11:57,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-07-20 04:11:57,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1495, Invalid=1927, Unknown=0, NotChecked=0, Total=3422 [2020-07-20 04:11:57,943 INFO L87 Difference]: Start difference. First operand 432 states and 460 transitions. Second operand 59 states. [2020-07-20 04:11:59,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:11:59,863 INFO L93 Difference]: Finished difference Result 447 states and 476 transitions. [2020-07-20 04:11:59,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-07-20 04:11:59,868 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 529 [2020-07-20 04:11:59,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:11:59,871 INFO L225 Difference]: With dead ends: 447 [2020-07-20 04:11:59,872 INFO L226 Difference]: Without dead ends: 445 [2020-07-20 04:11:59,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1501, Invalid=2039, Unknown=0, NotChecked=0, Total=3540 [2020-07-20 04:11:59,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-07-20 04:11:59,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 444. [2020-07-20 04:11:59,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-07-20 04:11:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 473 transitions. [2020-07-20 04:11:59,891 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 473 transitions. Word has length 529 [2020-07-20 04:11:59,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:11:59,892 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 473 transitions. [2020-07-20 04:11:59,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-07-20 04:11:59,892 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 473 transitions. [2020-07-20 04:11:59,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2020-07-20 04:11:59,895 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:11:59,895 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 53, 53, 53, 53, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:12:00,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-07-20 04:12:00,096 INFO L427 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:12:00,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:12:00,097 INFO L82 PathProgramCache]: Analyzing trace with hash -773143032, now seen corresponding path program 78 times [2020-07-20 04:12:00,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:12:00,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545962018] [2020-07-20 04:12:00,098 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:12:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:12:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 13992 backedges. 5724 proven. 2756 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2020-07-20 04:12:15,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545962018] [2020-07-20 04:12:15,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330506646] [2020-07-20 04:12:15,858 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2483c916 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:12:16,057 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2483c916 issued 3 check-sat command(s) [2020-07-20 04:12:16,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:12:16,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 108 conjunts are in the unsatisfiable core [2020-07-20 04:12:16,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:12:39,026 INFO L134 CoverageAnalysis]: Checked inductivity of 13992 backedges. 5928 proven. 2756 refuted. 0 times theorem prover too weak. 5308 trivial. 0 not checked. [2020-07-20 04:12:39,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:12:39,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 108] total 162 [2020-07-20 04:12:39,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577992374] [2020-07-20 04:12:39,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 162 states [2020-07-20 04:12:39,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:12:39,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2020-07-20 04:12:39,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5939, Invalid=20143, Unknown=0, NotChecked=0, Total=26082 [2020-07-20 04:12:39,030 INFO L87 Difference]: Start difference. First operand 444 states and 473 transitions. Second operand 162 states. [2020-07-20 04:12:56,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:12:56,748 INFO L93 Difference]: Finished difference Result 883 states and 1071 transitions. [2020-07-20 04:12:56,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2020-07-20 04:12:56,748 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 545 [2020-07-20 04:12:56,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:12:56,751 INFO L225 Difference]: With dead ends: 883 [2020-07-20 04:12:56,751 INFO L226 Difference]: Without dead ends: 658 [2020-07-20 04:12:56,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9698 ImplicationChecksByTransitivity, 45.2s TimeCoverageRelationStatistics Valid=11716, Invalid=34294, Unknown=0, NotChecked=0, Total=46010 [2020-07-20 04:12:56,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-07-20 04:12:56,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 446. [2020-07-20 04:12:56,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-07-20 04:12:56,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 475 transitions. [2020-07-20 04:12:56,785 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 475 transitions. Word has length 545 [2020-07-20 04:12:56,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:12:56,786 INFO L479 AbstractCegarLoop]: Abstraction has 446 states and 475 transitions. [2020-07-20 04:12:56,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 162 states. [2020-07-20 04:12:56,786 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 475 transitions. [2020-07-20 04:12:56,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2020-07-20 04:12:56,791 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:12:56,791 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 53, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:12:57,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:12:57,005 INFO L427 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:12:57,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:12:57,005 INFO L82 PathProgramCache]: Analyzing trace with hash 953822125, now seen corresponding path program 79 times [2020-07-20 04:12:57,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:12:57,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209981742] [2020-07-20 04:12:57,006 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:12:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:13:15,306 INFO L134 CoverageAnalysis]: Checked inductivity of 14098 backedges. 5724 proven. 2862 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2020-07-20 04:13:15,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209981742] [2020-07-20 04:13:15,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941951064] [2020-07-20 04:13:15,307 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b528e74 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:13:15,518 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b528e74 issued 3 check-sat command(s) [2020-07-20 04:13:15,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:13:15,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 110 conjunts are in the unsatisfiable core [2020-07-20 04:13:15,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:13:40,474 INFO L134 CoverageAnalysis]: Checked inductivity of 14098 backedges. 5724 proven. 2862 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2020-07-20 04:13:40,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:13:40,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 164 [2020-07-20 04:13:40,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227909863] [2020-07-20 04:13:40,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 164 states [2020-07-20 04:13:40,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:13:40,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2020-07-20 04:13:40,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6103, Invalid=20629, Unknown=0, NotChecked=0, Total=26732 [2020-07-20 04:13:40,477 INFO L87 Difference]: Start difference. First operand 446 states and 475 transitions. Second operand 164 states. [2020-07-20 04:13:57,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:13:57,085 INFO L93 Difference]: Finished difference Result 887 states and 1078 transitions. [2020-07-20 04:13:57,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2020-07-20 04:13:57,085 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 547 [2020-07-20 04:13:57,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:13:57,088 INFO L225 Difference]: With dead ends: 887 [2020-07-20 04:13:57,089 INFO L226 Difference]: Without dead ends: 664 [2020-07-20 04:13:57,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9911 ImplicationChecksByTransitivity, 49.6s TimeCoverageRelationStatistics Valid=12097, Invalid=35209, Unknown=0, NotChecked=0, Total=47306 [2020-07-20 04:13:57,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2020-07-20 04:13:57,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 448. [2020-07-20 04:13:57,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-07-20 04:13:57,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 477 transitions. [2020-07-20 04:13:57,118 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 477 transitions. Word has length 547 [2020-07-20 04:13:57,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:13:57,119 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 477 transitions. [2020-07-20 04:13:57,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 164 states. [2020-07-20 04:13:57,119 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 477 transitions. [2020-07-20 04:13:57,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-07-20 04:13:57,122 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:13:57,122 INFO L422 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:13:57,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:13:57,323 INFO L427 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:13:57,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:13:57,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1585005550, now seen corresponding path program 80 times [2020-07-20 04:13:57,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:13:57,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581625982] [2020-07-20 04:13:57,325 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:13:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:14:04,243 INFO L134 CoverageAnalysis]: Checked inductivity of 14206 backedges. 3076 proven. 5618 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2020-07-20 04:14:04,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581625982] [2020-07-20 04:14:04,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595014256] [2020-07-20 04:14:04,244 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2f3f9860 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:14:04,472 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2f3f9860 issued 4 check-sat command(s) [2020-07-20 04:14:04,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:14:04,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 111 conjunts are in the unsatisfiable core [2020-07-20 04:14:04,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:14:04,502 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:14:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 14206 backedges. 3076 proven. 5618 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2020-07-20 04:14:04,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:14:04,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 61 [2020-07-20 04:14:04,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919423464] [2020-07-20 04:14:04,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-07-20 04:14:04,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:14:04,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-07-20 04:14:04,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1606, Invalid=2054, Unknown=0, NotChecked=0, Total=3660 [2020-07-20 04:14:04,903 INFO L87 Difference]: Start difference. First operand 448 states and 477 transitions. Second operand 61 states. [2020-07-20 04:14:07,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:14:07,987 INFO L93 Difference]: Finished difference Result 463 states and 493 transitions. [2020-07-20 04:14:07,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-07-20 04:14:07,992 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 549 [2020-07-20 04:14:07,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:14:07,995 INFO L225 Difference]: With dead ends: 463 [2020-07-20 04:14:07,995 INFO L226 Difference]: Without dead ends: 461 [2020-07-20 04:14:07,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1612, Invalid=2170, Unknown=0, NotChecked=0, Total=3782 [2020-07-20 04:14:07,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-07-20 04:14:08,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 460. [2020-07-20 04:14:08,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-07-20 04:14:08,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 490 transitions. [2020-07-20 04:14:08,016 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 490 transitions. Word has length 549 [2020-07-20 04:14:08,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:14:08,016 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 490 transitions. [2020-07-20 04:14:08,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-07-20 04:14:08,017 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 490 transitions. [2020-07-20 04:14:08,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2020-07-20 04:14:08,020 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:14:08,020 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 55, 55, 55, 55, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:14:08,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:14:08,221 INFO L427 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:14:08,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:14:08,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1436583436, now seen corresponding path program 81 times [2020-07-20 04:14:08,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:14:08,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918056838] [2020-07-20 04:14:08,222 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@707addb0 [2020-07-20 04:14:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat