/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/geo3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:54:18,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:54:18,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:54:18,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:54:18,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:54:18,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:54:18,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:54:18,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:54:18,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:54:18,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:54:18,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:54:18,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:54:18,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:54:18,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:54:18,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:54:18,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:54:18,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:54:18,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:54:18,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:54:18,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:54:18,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:54:18,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:54:18,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:54:18,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:54:18,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:54:18,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:54:18,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:54:18,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:54:18,054 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 14:54:18,069 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:54:18,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:54:18,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:54:18,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:54:18,071 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:54:18,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:54:18,071 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:54:18,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:54:18,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:54:18,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:54:18,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:54:18,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:54:18,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:54:18,073 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:54:18,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:54:18,073 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:54:18,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:54:18,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:54:18,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:54:18,074 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:54:18,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:54:18,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:54:18,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:54:18,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:54:18,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:54:18,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:54:18,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:54:18,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:54:18,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:54:18,076 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS 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 [2020-07-20 14:54:18,370 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:54:18,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:54:18,387 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:54:18,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:54:18,388 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:54:18,389 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo3.c [2020-07-20 14:54:18,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1fd101f3/12798a375bd5415787a26af3b4bf0fc3/FLAG2ab81045d [2020-07-20 14:54:18,926 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:54:18,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo3.c [2020-07-20 14:54:18,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1fd101f3/12798a375bd5415787a26af3b4bf0fc3/FLAG2ab81045d [2020-07-20 14:54:19,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1fd101f3/12798a375bd5415787a26af3b4bf0fc3 [2020-07-20 14:54:19,335 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:54:19,338 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:54:19,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:54:19,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:54:19,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:54:19,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:54:19" (1/1) ... [2020-07-20 14:54:19,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37db3cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:54:19, skipping insertion in model container [2020-07-20 14:54:19,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:54:19" (1/1) ... [2020-07-20 14:54:19,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:54:19,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:54:19,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:54:19,557 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:54:19,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:54:19,592 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:54:19,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:54:19 WrapperNode [2020-07-20 14:54:19,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:54:19,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:54:19,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:54:19,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:54:19,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:54:19" (1/1) ... [2020-07-20 14:54:19,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:54:19" (1/1) ... [2020-07-20 14:54:19,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:54:19" (1/1) ... [2020-07-20 14:54:19,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:54:19" (1/1) ... [2020-07-20 14:54:19,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:54:19" (1/1) ... [2020-07-20 14:54:19,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:54:19" (1/1) ... [2020-07-20 14:54:19,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:54:19" (1/1) ... [2020-07-20 14:54:19,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:54:19,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:54:19,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:54:19,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:54:19,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:54:19" (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 14:54:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:54:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:54:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 14:54:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 14:54:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:54:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:54:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 14:54:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 14:54:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 14:54:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 14:54:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:54:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:54:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:54:19,962 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:54:19,962 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 14:54:19,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:54:19 BoogieIcfgContainer [2020-07-20 14:54:19,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:54:19,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:54:19,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:54:19,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:54:19,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:54:19" (1/3) ... [2020-07-20 14:54:19,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2455c4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:54:19, skipping insertion in model container [2020-07-20 14:54:19,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:54:19" (2/3) ... [2020-07-20 14:54:19,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2455c4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:54:19, skipping insertion in model container [2020-07-20 14:54:19,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:54:19" (3/3) ... [2020-07-20 14:54:19,976 INFO L109 eAbstractionObserver]: Analyzing ICFG geo3.c [2020-07-20 14:54:19,986 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:54:19,994 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:54:20,008 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:54:20,031 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:54:20,031 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:54:20,031 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:54:20,031 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:54:20,031 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:54:20,031 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:54:20,031 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:54:20,031 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:54:20,047 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-20 14:54:20,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 14:54:20,052 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:54:20,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:54:20,054 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:54:20,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:54:20,060 INFO L82 PathProgramCache]: Analyzing trace with hash -64610451, now seen corresponding path program 1 times [2020-07-20 14:54:20,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:54:20,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275235033] [2020-07-20 14:54:20,070 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:54:20,140 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:54:20,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:54:20,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 14:54:20,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:54:20,174 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 14:54:20,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:54:20,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275235033] [2020-07-20 14:54:20,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:54:20,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 14:54:20,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139648612] [2020-07-20 14:54:20,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 14:54:20,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:54:20,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 14:54:20,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 14:54:20,211 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-07-20 14:54:20,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:54:20,237 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2020-07-20 14:54:20,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 14:54:20,240 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-20 14:54:20,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:54:20,250 INFO L225 Difference]: With dead ends: 35 [2020-07-20 14:54:20,251 INFO L226 Difference]: Without dead ends: 15 [2020-07-20 14:54:20,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 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 14:54:20,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-20 14:54:20,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-20 14:54:20,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-20 14:54:20,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-20 14:54:20,300 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2020-07-20 14:54:20,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:54:20,300 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-20 14:54:20,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 14:54:20,300 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-20 14:54:20,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 14:54:20,301 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:54:20,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:54:20,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:54:20,515 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:54:20,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:54:20,515 INFO L82 PathProgramCache]: Analyzing trace with hash -62822991, now seen corresponding path program 1 times [2020-07-20 14:54:20,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:54:20,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533207735] [2020-07-20 14:54:20,517 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:54:20,558 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:54:20,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:54:20,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 14:54:20,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:54:20,717 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 14:54:20,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:54:20,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533207735] [2020-07-20 14:54:20,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:54:20,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:54:20,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010196295] [2020-07-20 14:54:20,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:54:20,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:54:20,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:54:20,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:54:20,723 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-07-20 14:54:20,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:54:20,792 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-07-20 14:54:20,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:54:20,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-20 14:54:20,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:54:20,795 INFO L225 Difference]: With dead ends: 25 [2020-07-20 14:54:20,795 INFO L226 Difference]: Without dead ends: 22 [2020-07-20 14:54:20,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 14:54:20,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-20 14:54:20,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-20 14:54:20,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 14:54:20,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-07-20 14:54:20,805 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2020-07-20 14:54:20,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:54:20,806 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-07-20 14:54:20,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:54:20,806 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-07-20 14:54:20,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 14:54:20,808 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:54:20,808 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:54:21,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:54:21,011 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:54:21,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:54:21,012 INFO L82 PathProgramCache]: Analyzing trace with hash 50868238, now seen corresponding path program 1 times [2020-07-20 14:54:21,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:54:21,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268904676] [2020-07-20 14:54:21,013 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:54:21,086 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:54:21,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:54:21,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 14:54:21,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:54:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:54:21,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:54:21,211 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:54:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:54:27,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268904676] [2020-07-20 14:54:27,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:54:27,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-20 14:54:27,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157320936] [2020-07-20 14:54:27,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 14:54:27,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:54:27,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 14:54:27,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=38, Unknown=3, NotChecked=0, Total=56 [2020-07-20 14:54:27,374 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 8 states. [2020-07-20 14:54:34,378 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 14 [2020-07-20 14:54:44,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:54:44,690 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-07-20 14:54:44,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:54:44,697 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-07-20 14:54:44,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:54:44,698 INFO L225 Difference]: With dead ends: 32 [2020-07-20 14:54:44,698 INFO L226 Difference]: Without dead ends: 29 [2020-07-20 14:54:44,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=23, Invalid=63, Unknown=4, NotChecked=0, Total=90 [2020-07-20 14:54:44,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-20 14:54:44,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-20 14:54:44,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-20 14:54:44,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-07-20 14:54:44,709 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2020-07-20 14:54:44,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:54:44,709 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-07-20 14:54:44,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 14:54:44,710 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-07-20 14:54:44,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 14:54:44,711 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:54:44,711 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:54:44,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:54:44,912 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:54:44,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:54:44,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1538749201, now seen corresponding path program 2 times [2020-07-20 14:54:44,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:54:44,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381411999] [2020-07-20 14:54:44,913 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:54:44,954 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:54:44,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:54:44,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-20 14:54:44,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:54:45,509 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-20 14:54:45,533 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:55:05,908 WARN L193 SmtUtils]: Spent 12.51 s on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 14:55:05,911 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:55:31,603 WARN L193 SmtUtils]: Spent 12.45 s on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 14:55:33,674 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:55:41,934 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0_BEFORE_CALL_5 Int) (v_main_~z~0_BEFORE_CALL_5 Int) (v_main_~x~0_14 Int)) (let ((.cse0 (* v_main_~z~0_BEFORE_CALL_5 v_main_~x~0_14))) (and (not (= (+ (* v_main_~a~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5) .cse0) (+ (* v_main_~a~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5) (* v_main_~z~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5 v_main_~x~0_14)))) (= (+ .cse0 v_main_~a~0_BEFORE_CALL_5) (+ (* v_main_~a~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5) v_main_~x~0_14))))) is different from false [2020-07-20 14:55:43,949 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0_BEFORE_CALL_5 Int) (v_main_~z~0_BEFORE_CALL_5 Int) (v_main_~x~0_14 Int)) (let ((.cse0 (* v_main_~z~0_BEFORE_CALL_5 v_main_~x~0_14))) (and (not (= (+ (* v_main_~a~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5) .cse0) (+ (* v_main_~a~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5) (* v_main_~z~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5 v_main_~x~0_14)))) (= (+ .cse0 v_main_~a~0_BEFORE_CALL_5) (+ (* v_main_~a~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5) v_main_~x~0_14))))) is different from true [2020-07-20 14:55:43,953 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 14:55:43,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:55:49,835 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:56:04,749 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 11 [2020-07-20 14:56:05,102 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 14:56:05,116 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-20 14:56:05,117 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:56:07,207 WARN L860 $PredicateComparison]: unable to prove that (forall ((main_~x~0 Int)) (let ((.cse0 (* main_~x~0 c_main_~z~0))) (or (= (+ (* c_main_~z~0 c_main_~a~0) (* main_~x~0 c_main_~z~0 c_main_~z~0)) (+ .cse0 (* c_main_~y~0 c_main_~z~0 c_main_~z~0 c_main_~a~0))) (not (= (+ .cse0 c_main_~a~0) (+ main_~x~0 (* c_main_~y~0 c_main_~z~0 c_main_~a~0))))))) is different from true [2020-07-20 14:56:07,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381411999] [2020-07-20 14:56:07,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 14:56:07,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-07-20 14:56:07,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296457694] [2020-07-20 14:56:07,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 14:56:07,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:56:07,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 14:56:07,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=145, Unknown=11, NotChecked=50, Total=240 [2020-07-20 14:56:07,211 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 11 states. [2020-07-20 14:59:56,908 WARN L193 SmtUtils]: Spent 3.22 m on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2020-07-20 15:00:10,036 WARN L193 SmtUtils]: Spent 8.66 s on a formula simplification. DAG size of input: 33 DAG size of output: 6 [2020-07-20 15:01:19,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:01:19,652 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-07-20 15:01:19,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 15:01:19,660 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-07-20 15:01:19,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:01:19,661 INFO L225 Difference]: With dead ends: 39 [2020-07-20 15:01:19,662 INFO L226 Difference]: Without dead ends: 37 [2020-07-20 15:01:19,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 288.5s TimeCoverageRelationStatistics Valid=53, Invalid=207, Unknown=20, NotChecked=62, Total=342 [2020-07-20 15:01:19,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-20 15:01:19,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-07-20 15:01:19,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-20 15:01:19,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-07-20 15:01:19,677 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 24 [2020-07-20 15:01:19,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:01:19,678 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-07-20 15:01:19,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 15:01:19,678 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-07-20 15:01:19,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 15:01:19,680 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:01:19,680 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:01:19,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:01:19,881 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:01:19,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:01:19,882 INFO L82 PathProgramCache]: Analyzing trace with hash -854689591, now seen corresponding path program 1 times [2020-07-20 15:01:19,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:01:19,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006355524] [2020-07-20 15:01:19,883 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:01:19,919 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 15:01:19,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:01:19,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 15:01:19,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:01:20,242 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-07-20 15:01:20,247 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 15:01:20,593 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-20 15:01:20,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 15:01:20,781 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 15:01:20,783 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-20 15:01:20,784 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 15:01:20,796 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 15:01:21,520 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-20 15:01:21,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006355524] [2020-07-20 15:01:21,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 15:01:21,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-07-20 15:01:21,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211119585] [2020-07-20 15:01:21,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 15:01:21,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:01:21,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 15:01:21,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-20 15:01:21,523 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 9 states. [2020-07-20 15:01:26,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:01:26,664 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-07-20 15:01:26,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 15:01:26,666 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-07-20 15:01:26,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:01:26,670 INFO L225 Difference]: With dead ends: 41 [2020-07-20 15:01:26,670 INFO L226 Difference]: Without dead ends: 34 [2020-07-20 15:01:26,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-07-20 15:01:26,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-20 15:01:26,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-07-20 15:01:26,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-20 15:01:26,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-07-20 15:01:26,689 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 30 [2020-07-20 15:01:26,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:01:26,690 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-07-20 15:01:26,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 15:01:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-07-20 15:01:26,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 15:01:26,699 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:01:26,699 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:01:26,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:01:26,917 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:01:26,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:01:26,918 INFO L82 PathProgramCache]: Analyzing trace with hash -695576914, now seen corresponding path program 3 times [2020-07-20 15:01:26,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:01:26,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95072069] [2020-07-20 15:01:26,919 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:01:26,958 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 15:01:26,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:01:26,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-20 15:01:26,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:01:30,506 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-20 15:01:30,516 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 15:01:36,747 WARN L838 $PredicateComparison]: unable to prove that (or (<= 1 |c___VERIFIER_assert_#in~cond|) (and (exists ((v_main_~z~0_BEFORE_CALL_8 Int) (v_main_~x~0_18 Int) (v_main_~y~0_19 Int) (v_main_~x~0_BEFORE_CALL_8 Int)) (and (not (= (+ (* v_main_~z~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_8 v_main_~x~0_18 v_main_~y~0_19) (* v_main_~z~0_BEFORE_CALL_8 v_main_~x~0_BEFORE_CALL_8)) (+ (* v_main_~z~0_BEFORE_CALL_8 v_main_~x~0_18) (* v_main_~z~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_8 v_main_~y~0_19 v_main_~x~0_BEFORE_CALL_8)))) (= (+ (* v_main_~z~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_8 v_main_~x~0_18 v_main_~y~0_19) v_main_~x~0_BEFORE_CALL_8) (+ v_main_~x~0_18 (* v_main_~z~0_BEFORE_CALL_8 v_main_~y~0_19 v_main_~x~0_BEFORE_CALL_8))))) (<= 0 |c___VERIFIER_assert_#in~cond|))) is different from false [2020-07-20 15:01:36,751 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 15:02:07,334 WARN L193 SmtUtils]: Spent 13.88 s on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 15:02:09,423 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 15:02:17,647 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_main_~z~0_BEFORE_CALL_8 Int) (v_main_~x~0_18 Int) (v_main_~y~0_19 Int) (v_main_~x~0_BEFORE_CALL_8 Int)) (and (not (= (+ (* v_main_~z~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_8 v_main_~x~0_18 v_main_~y~0_19) (* v_main_~z~0_BEFORE_CALL_8 v_main_~x~0_BEFORE_CALL_8)) (+ (* v_main_~z~0_BEFORE_CALL_8 v_main_~x~0_18) (* v_main_~z~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_8 v_main_~y~0_19 v_main_~x~0_BEFORE_CALL_8)))) (= (+ (* v_main_~z~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_8 v_main_~x~0_18 v_main_~y~0_19) v_main_~x~0_BEFORE_CALL_8) (+ v_main_~x~0_18 (* v_main_~z~0_BEFORE_CALL_8 v_main_~y~0_19 v_main_~x~0_BEFORE_CALL_8))))) is different from false [2020-07-20 15:02:19,663 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_main_~z~0_BEFORE_CALL_8 Int) (v_main_~x~0_18 Int) (v_main_~y~0_19 Int) (v_main_~x~0_BEFORE_CALL_8 Int)) (and (not (= (+ (* v_main_~z~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_8 v_main_~x~0_18 v_main_~y~0_19) (* v_main_~z~0_BEFORE_CALL_8 v_main_~x~0_BEFORE_CALL_8)) (+ (* v_main_~z~0_BEFORE_CALL_8 v_main_~x~0_18) (* v_main_~z~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_8 v_main_~y~0_19 v_main_~x~0_BEFORE_CALL_8)))) (= (+ (* v_main_~z~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_8 v_main_~x~0_18 v_main_~y~0_19) v_main_~x~0_BEFORE_CALL_8) (+ v_main_~x~0_18 (* v_main_~z~0_BEFORE_CALL_8 v_main_~y~0_19 v_main_~x~0_BEFORE_CALL_8))))) is different from true [2020-07-20 15:02:19,665 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-20 15:02:19,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 15:02:23,868 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 15:02:33,577 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-20 15:02:33,623 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-20 15:02:33,625 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 15:02:35,677 WARN L860 $PredicateComparison]: unable to prove that (forall ((main_~x~0 Int) (main_~y~0 Int)) (let ((.cse0 (* main_~x~0 c_main_~z~0))) (or (= (+ .cse0 (* main_~y~0 c_main_~z~0 c_main_~z~0 c_main_~a~0)) (+ (* c_main_~z~0 c_main_~a~0) (* main_~x~0 c_main_~z~0 c_main_~z~0))) (not (= (+ .cse0 c_main_~a~0) (+ main_~x~0 (* main_~y~0 c_main_~z~0 c_main_~a~0))))))) is different from true [2020-07-20 15:02:35,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95072069] [2020-07-20 15:02:35,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 15:02:35,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-20 15:02:35,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375664853] [2020-07-20 15:02:35,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 15:02:35,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:02:35,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 15:02:35,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=82, Unknown=13, NotChecked=60, Total=182 [2020-07-20 15:02:35,681 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 10 states. [2020-07-20 15:02:54,808 WARN L838 $PredicateComparison]: unable to prove that (and (or (and (exists ((v_main_~z~0_BEFORE_CALL_8 Int) (v_main_~x~0_18 Int) (v_main_~y~0_19 Int) (v_main_~x~0_BEFORE_CALL_8 Int)) (and (not (= (+ (* v_main_~z~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_8 v_main_~x~0_18 v_main_~y~0_19) (* v_main_~z~0_BEFORE_CALL_8 v_main_~x~0_BEFORE_CALL_8)) (+ (* v_main_~z~0_BEFORE_CALL_8 v_main_~x~0_18) (* v_main_~z~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_8 v_main_~y~0_19 v_main_~x~0_BEFORE_CALL_8)))) (= (+ (* v_main_~z~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_8 v_main_~x~0_18 v_main_~y~0_19) v_main_~x~0_BEFORE_CALL_8) (+ v_main_~x~0_18 (* v_main_~z~0_BEFORE_CALL_8 v_main_~y~0_19 v_main_~x~0_BEFORE_CALL_8))))) (<= 0 c___VERIFIER_assert_~cond)) (<= 1 c___VERIFIER_assert_~cond)) (= |c___VERIFIER_assert_#in~cond| c___VERIFIER_assert_~cond)) is different from false [2020-07-20 15:03:10,404 WARN L193 SmtUtils]: Spent 6.97 s on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 15:03:12,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:03:12,755 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-07-20 15:03:12,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 15:03:12,757 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-07-20 15:03:12,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:03:12,757 INFO L225 Difference]: With dead ends: 34 [2020-07-20 15:03:12,757 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 15:03:12,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 74.0s TimeCoverageRelationStatistics Valid=41, Invalid=138, Unknown=19, NotChecked=108, Total=306 [2020-07-20 15:03:12,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 15:03:12,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 15:03:12,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 15:03:12,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 15:03:12,759 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-07-20 15:03:12,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:03:12,759 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 15:03:12,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 15:03:12,759 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 15:03:12,759 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 15:03:12,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:03:12,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 15:03:13,325 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2020-07-20 15:03:17,047 WARN L193 SmtUtils]: Spent 3.72 s on a formula simplification. DAG size of input: 26 DAG size of output: 21