/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 11:42:11,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:42:11,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:42:11,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:42:11,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:42:11,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:42:11,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:42:11,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:42:11,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:42:11,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:42:11,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:42:11,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:42:11,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:42:11,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:42:11,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:42:11,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:42:11,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:42:11,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:42:11,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:42:11,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:42:11,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:42:11,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:42:11,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:42:11,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:42:11,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 11:42:11,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:42:11,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:42:11,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:42:11,345 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 [2020-07-21 11:42:11,380 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:42:11,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:42:11,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:42:11,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:42:11,387 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:42:11,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:42:11,387 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:42:11,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:42:11,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:42:11,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:42:11,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:42:11,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:42:11,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:42:11,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:42:11,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:42:11,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:42:11,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:42:11,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:42:11,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:42:11,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:42:11,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:42:11,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:42:11,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:42:11,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:42:11,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:42:11,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:42:11,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:11,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:42:11,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:42:11,391 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 -> NOT_INCREMENTALLY [2020-07-21 11:42:11,665 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:42:11,681 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:42:11,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:42:11,687 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:42:11,689 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:42:11,690 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2020-07-21 11:42:11,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daee09eb6/abb05ef906d84c52a2a2451f17bb00c1/FLAG044b2ffe8 [2020-07-21 11:42:12,215 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:42:12,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2020-07-21 11:42:12,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daee09eb6/abb05ef906d84c52a2a2451f17bb00c1/FLAG044b2ffe8 [2020-07-21 11:42:12,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daee09eb6/abb05ef906d84c52a2a2451f17bb00c1 [2020-07-21 11:42:12,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:42:12,614 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:42:12,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:42:12,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:42:12,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:42:12,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:42:12" (1/1) ... [2020-07-21 11:42:12,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58a42d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:12, skipping insertion in model container [2020-07-21 11:42:12,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:42:12" (1/1) ... [2020-07-21 11:42:12,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:42:12,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:42:12,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:42:12,897 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:42:12,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:42:13,033 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:42:13,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:13 WrapperNode [2020-07-21 11:42:13,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:42:13,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:42:13,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:42:13,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:42:13,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:13" (1/1) ... [2020-07-21 11:42:13,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:13" (1/1) ... [2020-07-21 11:42:13,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:13" (1/1) ... [2020-07-21 11:42:13,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:13" (1/1) ... [2020-07-21 11:42:13,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:13" (1/1) ... [2020-07-21 11:42:13,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:13" (1/1) ... [2020-07-21 11:42:13,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:13" (1/1) ... [2020-07-21 11:42:13,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:42:13,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:42:13,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:42:13,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:42:13,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:13" (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 [2020-07-21 11:42:13,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:42:13,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:42:13,146 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 11:42:13,146 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:42:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:42:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 11:42:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 11:42:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 11:42:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:42:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:42:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:42:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:42:13,609 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:42:13,609 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 11:42:13,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:42:13 BoogieIcfgContainer [2020-07-21 11:42:13,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:42:13,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:42:13,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:42:13,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:42:13,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:42:12" (1/3) ... [2020-07-21 11:42:13,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278e60e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:42:13, skipping insertion in model container [2020-07-21 11:42:13,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:13" (2/3) ... [2020-07-21 11:42:13,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278e60e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:42:13, skipping insertion in model container [2020-07-21 11:42:13,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:42:13" (3/3) ... [2020-07-21 11:42:13,623 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i.v+cfa-reducer.c [2020-07-21 11:42:13,633 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:42:13,640 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2020-07-21 11:42:13,654 INFO L251 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-07-21 11:42:13,679 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:42:13,679 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:42:13,679 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:42:13,679 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:42:13,679 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:42:13,679 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:42:13,679 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:42:13,679 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:42:13,700 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-07-21 11:42:13,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 11:42:13,707 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:13,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:13,709 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:13,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:13,715 INFO L82 PathProgramCache]: Analyzing trace with hash -2019463306, now seen corresponding path program 1 times [2020-07-21 11:42:13,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:13,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671529824] [2020-07-21 11:42:13,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-21 11:42:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:13,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:42:13,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:13,856 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:13,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:13,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671529824] [2020-07-21 11:42:13,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:13,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:42:13,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225876103] [2020-07-21 11:42:13,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:42:13,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:13,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:42:13,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:42:13,911 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 3 states. [2020-07-21 11:42:13,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:13,947 INFO L93 Difference]: Finished difference Result 93 states and 129 transitions. [2020-07-21 11:42:13,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:42:13,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-21 11:42:13,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:13,958 INFO L225 Difference]: With dead ends: 93 [2020-07-21 11:42:13,959 INFO L226 Difference]: Without dead ends: 80 [2020-07-21 11:42:13,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:42:13,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-07-21 11:42:14,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-07-21 11:42:14,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-21 11:42:14,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2020-07-21 11:42:14,008 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 19 [2020-07-21 11:42:14,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:14,009 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2020-07-21 11:42:14,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:42:14,009 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2020-07-21 11:42:14,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-21 11:42:14,010 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:14,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:14,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:14,226 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:14,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:14,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1821150056, now seen corresponding path program 1 times [2020-07-21 11:42:14,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:14,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722158410] [2020-07-21 11:42:14,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-21 11:42:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:14,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 11:42:14,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:14,345 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:14,349 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:14,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:14,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:14,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722158410] [2020-07-21 11:42:14,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:14,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 11:42:14,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602396817] [2020-07-21 11:42:14,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:42:14,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:14,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:42:14,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:42:14,374 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand 6 states. [2020-07-21 11:42:14,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:14,530 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2020-07-21 11:42:14,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:42:14,532 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-07-21 11:42:14,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:14,534 INFO L225 Difference]: With dead ends: 80 [2020-07-21 11:42:14,535 INFO L226 Difference]: Without dead ends: 78 [2020-07-21 11:42:14,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 11:42:14,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-21 11:42:14,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-07-21 11:42:14,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-07-21 11:42:14,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2020-07-21 11:42:14,558 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 20 [2020-07-21 11:42:14,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:14,558 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2020-07-21 11:42:14,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:42:14,559 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2020-07-21 11:42:14,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 11:42:14,561 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:14,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:14,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:14,776 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:14,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:14,778 INFO L82 PathProgramCache]: Analyzing trace with hash 2073610827, now seen corresponding path program 1 times [2020-07-21 11:42:14,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:14,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229948787] [2020-07-21 11:42:14,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-21 11:42:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:14,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:42:14,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:14,833 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:14,836 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:14,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:14,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229948787] [2020-07-21 11:42:14,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:14,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:42:14,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664094517] [2020-07-21 11:42:14,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:42:14,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:14,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:42:14,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:42:14,870 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 4 states. [2020-07-21 11:42:14,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:14,953 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2020-07-21 11:42:14,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:42:14,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-21 11:42:14,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:14,955 INFO L225 Difference]: With dead ends: 101 [2020-07-21 11:42:14,955 INFO L226 Difference]: Without dead ends: 99 [2020-07-21 11:42:14,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:42:14,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-07-21 11:42:14,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 76. [2020-07-21 11:42:14,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-21 11:42:14,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2020-07-21 11:42:14,965 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 22 [2020-07-21 11:42:14,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:14,966 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2020-07-21 11:42:14,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:42:14,966 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2020-07-21 11:42:14,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 11:42:14,967 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:14,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:15,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:15,181 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:15,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:15,183 INFO L82 PathProgramCache]: Analyzing trace with hash -142570686, now seen corresponding path program 1 times [2020-07-21 11:42:15,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:15,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63499453] [2020-07-21 11:42:15,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-21 11:42:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:15,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:42:15,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:15,245 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:15,247 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:15,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:15,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63499453] [2020-07-21 11:42:15,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:15,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:42:15,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517521539] [2020-07-21 11:42:15,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:42:15,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:15,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:42:15,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:42:15,273 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 5 states. [2020-07-21 11:42:15,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:15,357 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2020-07-21 11:42:15,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:42:15,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-07-21 11:42:15,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:15,359 INFO L225 Difference]: With dead ends: 76 [2020-07-21 11:42:15,360 INFO L226 Difference]: Without dead ends: 74 [2020-07-21 11:42:15,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:42:15,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-21 11:42:15,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-07-21 11:42:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-07-21 11:42:15,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-07-21 11:42:15,373 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 23 [2020-07-21 11:42:15,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:15,374 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-07-21 11:42:15,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:42:15,374 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-07-21 11:42:15,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 11:42:15,379 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:15,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:15,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:15,580 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:15,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:15,581 INFO L82 PathProgramCache]: Analyzing trace with hash 402497124, now seen corresponding path program 1 times [2020-07-21 11:42:15,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:15,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697324495] [2020-07-21 11:42:15,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-21 11:42:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:15,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:42:15,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:15,636 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:15,639 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:15,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:15,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697324495] [2020-07-21 11:42:15,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:15,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:42:15,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511099863] [2020-07-21 11:42:15,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:42:15,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:15,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:42:15,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:42:15,655 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 4 states. [2020-07-21 11:42:15,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:15,784 INFO L93 Difference]: Finished difference Result 158 states and 166 transitions. [2020-07-21 11:42:15,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:42:15,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-07-21 11:42:15,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:15,786 INFO L225 Difference]: With dead ends: 158 [2020-07-21 11:42:15,786 INFO L226 Difference]: Without dead ends: 156 [2020-07-21 11:42:15,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:42:15,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-07-21 11:42:15,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 77. [2020-07-21 11:42:15,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-21 11:42:15,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-07-21 11:42:15,808 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 26 [2020-07-21 11:42:15,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:15,812 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-07-21 11:42:15,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:42:15,812 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-07-21 11:42:15,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 11:42:15,813 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:15,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:16,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:16,014 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:16,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:16,014 INFO L82 PathProgramCache]: Analyzing trace with hash 406230933, now seen corresponding path program 1 times [2020-07-21 11:42:16,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:16,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691958411] [2020-07-21 11:42:16,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-21 11:42:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:16,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:42:16,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:16,071 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:16,073 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:16,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:16,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691958411] [2020-07-21 11:42:16,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:16,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:42:16,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267775197] [2020-07-21 11:42:16,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:42:16,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:16,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:42:16,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:42:16,085 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 4 states. [2020-07-21 11:42:16,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:16,155 INFO L93 Difference]: Finished difference Result 124 states and 130 transitions. [2020-07-21 11:42:16,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:42:16,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-07-21 11:42:16,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:16,157 INFO L225 Difference]: With dead ends: 124 [2020-07-21 11:42:16,157 INFO L226 Difference]: Without dead ends: 122 [2020-07-21 11:42:16,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:42:16,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-21 11:42:16,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 79. [2020-07-21 11:42:16,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-21 11:42:16,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2020-07-21 11:42:16,166 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 26 [2020-07-21 11:42:16,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:16,167 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2020-07-21 11:42:16,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:42:16,167 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2020-07-21 11:42:16,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 11:42:16,168 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:16,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:16,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:16,382 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:16,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:16,383 INFO L82 PathProgramCache]: Analyzing trace with hash -407487796, now seen corresponding path program 1 times [2020-07-21 11:42:16,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:16,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776999585] [2020-07-21 11:42:16,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:16,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:42:16,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:16,444 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:16,446 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:16,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:16,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:16,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776999585] [2020-07-21 11:42:16,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:16,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:42:16,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350181356] [2020-07-21 11:42:16,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:42:16,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:16,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:42:16,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:42:16,464 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 5 states. [2020-07-21 11:42:16,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:16,574 INFO L93 Difference]: Finished difference Result 121 states and 127 transitions. [2020-07-21 11:42:16,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:42:16,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-21 11:42:16,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:16,577 INFO L225 Difference]: With dead ends: 121 [2020-07-21 11:42:16,577 INFO L226 Difference]: Without dead ends: 119 [2020-07-21 11:42:16,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:42:16,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-07-21 11:42:16,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 77. [2020-07-21 11:42:16,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-21 11:42:16,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-07-21 11:42:16,587 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 27 [2020-07-21 11:42:16,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:16,587 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-07-21 11:42:16,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:42:16,588 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-07-21 11:42:16,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 11:42:16,589 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:16,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:16,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:16,790 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:16,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:16,790 INFO L82 PathProgramCache]: Analyzing trace with hash -291739827, now seen corresponding path program 1 times [2020-07-21 11:42:16,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:16,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789550813] [2020-07-21 11:42:16,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:16,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:42:16,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:16,844 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:16,845 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:16,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:16,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789550813] [2020-07-21 11:42:16,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:16,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:42:16,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382735824] [2020-07-21 11:42:16,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:42:16,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:16,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:42:16,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:42:16,858 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 5 states. [2020-07-21 11:42:16,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:16,942 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-07-21 11:42:16,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:42:16,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-21 11:42:16,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:16,943 INFO L225 Difference]: With dead ends: 77 [2020-07-21 11:42:16,943 INFO L226 Difference]: Without dead ends: 75 [2020-07-21 11:42:16,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:42:16,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-07-21 11:42:16,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-07-21 11:42:16,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-21 11:42:16,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-07-21 11:42:16,949 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 27 [2020-07-21 11:42:16,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:16,950 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-07-21 11:42:16,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:42:16,950 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-07-21 11:42:16,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-21 11:42:16,951 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:16,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:17,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:17,166 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:17,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:17,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1188998893, now seen corresponding path program 1 times [2020-07-21 11:42:17,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:17,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126823106] [2020-07-21 11:42:17,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:17,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 11:42:17,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:17,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:17,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:17,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126823106] [2020-07-21 11:42:17,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:17,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:42:17,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109433018] [2020-07-21 11:42:17,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:42:17,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:17,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:42:17,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:42:17,216 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 3 states. [2020-07-21 11:42:17,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:17,278 INFO L93 Difference]: Finished difference Result 115 states and 121 transitions. [2020-07-21 11:42:17,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:42:17,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-07-21 11:42:17,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:17,280 INFO L225 Difference]: With dead ends: 115 [2020-07-21 11:42:17,280 INFO L226 Difference]: Without dead ends: 75 [2020-07-21 11:42:17,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:42:17,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-07-21 11:42:17,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-07-21 11:42:17,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-21 11:42:17,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-07-21 11:42:17,287 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 29 [2020-07-21 11:42:17,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:17,288 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-07-21 11:42:17,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:42:17,288 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-07-21 11:42:17,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 11:42:17,289 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:17,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:17,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:17,500 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:17,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:17,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1640998784, now seen corresponding path program 1 times [2020-07-21 11:42:17,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:17,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824019093] [2020-07-21 11:42:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:17,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 11:42:17,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:17,569 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:17,573 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:17,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:17,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824019093] [2020-07-21 11:42:17,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:17,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:42:17,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732674591] [2020-07-21 11:42:17,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:42:17,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:17,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:42:17,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:42:17,589 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 5 states. [2020-07-21 11:42:17,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:17,656 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2020-07-21 11:42:17,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:42:17,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-21 11:42:17,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:17,658 INFO L225 Difference]: With dead ends: 76 [2020-07-21 11:42:17,658 INFO L226 Difference]: Without dead ends: 74 [2020-07-21 11:42:17,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:42:17,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-21 11:42:17,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-07-21 11:42:17,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-07-21 11:42:17,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-07-21 11:42:17,664 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 30 [2020-07-21 11:42:17,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:17,665 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-07-21 11:42:17,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:42:17,665 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-07-21 11:42:17,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 11:42:17,666 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:17,666 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:17,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:17,871 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:17,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:17,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1892106755, now seen corresponding path program 1 times [2020-07-21 11:42:17,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:17,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760119169] [2020-07-21 11:42:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:17,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 11:42:17,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:17,937 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:17,941 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 11:42:17,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:42:17,963 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:42:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 11:42:17,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760119169] [2020-07-21 11:42:17,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:42:17,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-07-21 11:42:17,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801419421] [2020-07-21 11:42:17,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:42:17,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:17,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:42:17,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:42:17,985 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 5 states. [2020-07-21 11:42:18,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:18,080 INFO L93 Difference]: Finished difference Result 111 states and 115 transitions. [2020-07-21 11:42:18,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:42:18,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-21 11:42:18,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:18,085 INFO L225 Difference]: With dead ends: 111 [2020-07-21 11:42:18,085 INFO L226 Difference]: Without dead ends: 109 [2020-07-21 11:42:18,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:42:18,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-21 11:42:18,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 70. [2020-07-21 11:42:18,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-21 11:42:18,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2020-07-21 11:42:18,092 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 30 [2020-07-21 11:42:18,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:18,092 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2020-07-21 11:42:18,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:42:18,092 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2020-07-21 11:42:18,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-21 11:42:18,093 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:18,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:18,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:18,297 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:18,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:18,298 INFO L82 PathProgramCache]: Analyzing trace with hash 668648404, now seen corresponding path program 1 times [2020-07-21 11:42:18,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:18,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306680100] [2020-07-21 11:42:18,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:18,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:42:18,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:18,356 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:18,359 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:18,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:18,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:18,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306680100] [2020-07-21 11:42:18,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:18,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:42:18,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555347216] [2020-07-21 11:42:18,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:42:18,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:18,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:42:18,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:42:18,371 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand 5 states. [2020-07-21 11:42:18,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:18,446 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-07-21 11:42:18,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:42:18,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-07-21 11:42:18,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:18,449 INFO L225 Difference]: With dead ends: 70 [2020-07-21 11:42:18,450 INFO L226 Difference]: Without dead ends: 68 [2020-07-21 11:42:18,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:42:18,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-21 11:42:18,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-21 11:42:18,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-21 11:42:18,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2020-07-21 11:42:18,455 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 31 [2020-07-21 11:42:18,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:18,457 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2020-07-21 11:42:18,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:42:18,457 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2020-07-21 11:42:18,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-21 11:42:18,458 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:18,462 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:18,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:18,672 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:18,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:18,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1470784207, now seen corresponding path program 1 times [2020-07-21 11:42:18,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:18,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161715382] [2020-07-21 11:42:18,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:18,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 11:42:18,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:18,726 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:18,736 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 11:42:18,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:42:18,753 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:42:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 11:42:18,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161715382] [2020-07-21 11:42:18,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:42:18,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-07-21 11:42:18,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113348695] [2020-07-21 11:42:18,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:42:18,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:18,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:42:18,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:42:18,787 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand 5 states. [2020-07-21 11:42:18,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:18,844 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2020-07-21 11:42:18,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:42:18,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-07-21 11:42:18,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:18,845 INFO L225 Difference]: With dead ends: 69 [2020-07-21 11:42:18,845 INFO L226 Difference]: Without dead ends: 67 [2020-07-21 11:42:18,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:42:18,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-21 11:42:18,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2020-07-21 11:42:18,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-21 11:42:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2020-07-21 11:42:18,850 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 31 [2020-07-21 11:42:18,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:18,850 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2020-07-21 11:42:18,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:42:18,850 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2020-07-21 11:42:18,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-21 11:42:18,851 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:18,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:19,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:19,061 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:19,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:19,062 INFO L82 PathProgramCache]: Analyzing trace with hash -350608983, now seen corresponding path program 1 times [2020-07-21 11:42:19,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:19,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895952202] [2020-07-21 11:42:19,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:19,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 11:42:19,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:19,130 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:19,134 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:19,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:19,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:19,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895952202] [2020-07-21 11:42:19,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:19,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:42:19,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399483251] [2020-07-21 11:42:19,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:42:19,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:19,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:42:19,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:42:19,146 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand 5 states. [2020-07-21 11:42:19,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:19,219 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-07-21 11:42:19,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:42:19,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-07-21 11:42:19,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:19,220 INFO L225 Difference]: With dead ends: 63 [2020-07-21 11:42:19,221 INFO L226 Difference]: Without dead ends: 61 [2020-07-21 11:42:19,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:42:19,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-21 11:42:19,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-07-21 11:42:19,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-21 11:42:19,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2020-07-21 11:42:19,226 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 34 [2020-07-21 11:42:19,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:19,227 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2020-07-21 11:42:19,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:42:19,227 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2020-07-21 11:42:19,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-21 11:42:19,227 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:19,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:19,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:19,438 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:19,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:19,439 INFO L82 PathProgramCache]: Analyzing trace with hash 2016026591, now seen corresponding path program 1 times [2020-07-21 11:42:19,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:19,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337396897] [2020-07-21 11:42:19,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:19,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 11:42:19,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:19,519 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:19,520 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:19,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:19,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337396897] [2020-07-21 11:42:19,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:19,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 11:42:19,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611928237] [2020-07-21 11:42:19,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 11:42:19,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:19,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 11:42:19,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:42:19,535 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 7 states. [2020-07-21 11:42:19,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:19,655 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2020-07-21 11:42:19,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 11:42:19,655 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-07-21 11:42:19,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:19,656 INFO L225 Difference]: With dead ends: 71 [2020-07-21 11:42:19,656 INFO L226 Difference]: Without dead ends: 69 [2020-07-21 11:42:19,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-07-21 11:42:19,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-21 11:42:19,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 58. [2020-07-21 11:42:19,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-07-21 11:42:19,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-07-21 11:42:19,661 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 35 [2020-07-21 11:42:19,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:19,662 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-07-21 11:42:19,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 11:42:19,662 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-07-21 11:42:19,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 11:42:19,663 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:19,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:19,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:19,874 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:19,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:19,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1371399406, now seen corresponding path program 1 times [2020-07-21 11:42:19,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:19,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392171693] [2020-07-21 11:42:19,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:19,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 11:42:19,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:19,937 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:19,938 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:19,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:19,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:19,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392171693] [2020-07-21 11:42:19,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:19,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:42:19,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197077674] [2020-07-21 11:42:19,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:42:19,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:19,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:42:19,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:42:19,950 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 5 states. [2020-07-21 11:42:20,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:20,017 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-07-21 11:42:20,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:42:20,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-07-21 11:42:20,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:20,018 INFO L225 Difference]: With dead ends: 60 [2020-07-21 11:42:20,018 INFO L226 Difference]: Without dead ends: 58 [2020-07-21 11:42:20,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:42:20,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-21 11:42:20,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-07-21 11:42:20,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-21 11:42:20,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-07-21 11:42:20,022 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 38 [2020-07-21 11:42:20,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:20,023 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-07-21 11:42:20,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:42:20,023 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-07-21 11:42:20,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-07-21 11:42:20,024 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:20,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:20,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:20,235 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:20,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:20,236 INFO L82 PathProgramCache]: Analyzing trace with hash 436294569, now seen corresponding path program 1 times [2020-07-21 11:42:20,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:20,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913406352] [2020-07-21 11:42:20,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:20,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 11:42:20,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:20,325 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:20,326 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:20,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:20,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:20,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913406352] [2020-07-21 11:42:20,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:20,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 11:42:20,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510662825] [2020-07-21 11:42:20,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 11:42:20,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:20,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 11:42:20,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:42:20,345 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 7 states. [2020-07-21 11:42:20,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:20,449 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-07-21 11:42:20,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 11:42:20,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-07-21 11:42:20,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:20,450 INFO L225 Difference]: With dead ends: 70 [2020-07-21 11:42:20,450 INFO L226 Difference]: Without dead ends: 68 [2020-07-21 11:42:20,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-07-21 11:42:20,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-21 11:42:20,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 54. [2020-07-21 11:42:20,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-21 11:42:20,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-07-21 11:42:20,455 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 39 [2020-07-21 11:42:20,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:20,455 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-07-21 11:42:20,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 11:42:20,455 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-07-21 11:42:20,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-21 11:42:20,456 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:20,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:20,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:20,666 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:20,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:20,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1627614740, now seen corresponding path program 1 times [2020-07-21 11:42:20,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:20,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291989829] [2020-07-21 11:42:20,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:20,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:42:20,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:20,718 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:20,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:20,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:20,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291989829] [2020-07-21 11:42:20,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:20,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:42:20,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564795340] [2020-07-21 11:42:20,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:42:20,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:20,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:42:20,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:42:20,733 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 4 states. [2020-07-21 11:42:20,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:20,757 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-07-21 11:42:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:42:20,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-07-21 11:42:20,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:20,758 INFO L225 Difference]: With dead ends: 65 [2020-07-21 11:42:20,758 INFO L226 Difference]: Without dead ends: 63 [2020-07-21 11:42:20,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:42:20,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-21 11:42:20,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2020-07-21 11:42:20,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-07-21 11:42:20,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-07-21 11:42:20,763 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 41 [2020-07-21 11:42:20,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:20,763 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-07-21 11:42:20,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:42:20,763 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-07-21 11:42:20,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 11:42:20,764 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:20,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:20,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:20,974 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:20,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:20,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1083553822, now seen corresponding path program 1 times [2020-07-21 11:42:20,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:20,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025515170] [2020-07-21 11:42:20,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:21,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:42:21,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:21,030 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:21,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:21,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:21,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025515170] [2020-07-21 11:42:21,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:21,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:42:21,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100890976] [2020-07-21 11:42:21,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:42:21,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:21,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:42:21,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:42:21,041 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 5 states. [2020-07-21 11:42:21,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:21,062 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2020-07-21 11:42:21,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:42:21,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-07-21 11:42:21,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:21,064 INFO L225 Difference]: With dead ends: 59 [2020-07-21 11:42:21,064 INFO L226 Difference]: Without dead ends: 57 [2020-07-21 11:42:21,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:42:21,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-21 11:42:21,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-07-21 11:42:21,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-21 11:42:21,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-07-21 11:42:21,068 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 42 [2020-07-21 11:42:21,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:21,069 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-07-21 11:42:21,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:42:21,069 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-07-21 11:42:21,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-21 11:42:21,069 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:21,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:21,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:21,279 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:21,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:21,279 INFO L82 PathProgramCache]: Analyzing trace with hash -769566670, now seen corresponding path program 1 times [2020-07-21 11:42:21,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:21,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981894551] [2020-07-21 11:42:21,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:21,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 11:42:21,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:21,348 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:21,349 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:21,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:21,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981894551] [2020-07-21 11:42:21,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:21,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:42:21,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693760606] [2020-07-21 11:42:21,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:42:21,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:21,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:42:21,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:42:21,360 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 5 states. [2020-07-21 11:42:21,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:21,433 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2020-07-21 11:42:21,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:42:21,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-07-21 11:42:21,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:21,434 INFO L225 Difference]: With dead ends: 59 [2020-07-21 11:42:21,434 INFO L226 Difference]: Without dead ends: 57 [2020-07-21 11:42:21,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:42:21,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-21 11:42:21,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2020-07-21 11:42:21,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-21 11:42:21,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-07-21 11:42:21,438 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 43 [2020-07-21 11:42:21,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:21,438 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-07-21 11:42:21,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:42:21,438 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-07-21 11:42:21,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-21 11:42:21,439 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:21,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:21,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:21,640 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:21,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:21,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1913240228, now seen corresponding path program 1 times [2020-07-21 11:42:21,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:21,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269933600] [2020-07-21 11:42:21,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:21,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 11:42:21,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:21,713 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:21,713 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:21,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:21,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:21,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269933600] [2020-07-21 11:42:21,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:21,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 11:42:21,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059432392] [2020-07-21 11:42:21,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 11:42:21,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:21,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 11:42:21,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:42:21,725 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 7 states. [2020-07-21 11:42:21,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:21,834 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-07-21 11:42:21,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 11:42:21,835 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-07-21 11:42:21,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:21,835 INFO L225 Difference]: With dead ends: 68 [2020-07-21 11:42:21,836 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 11:42:21,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-07-21 11:42:21,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 11:42:21,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 11:42:21,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 11:42:21,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 11:42:21,837 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-07-21 11:42:21,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:21,838 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 11:42:21,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 11:42:21,838 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 11:42:21,838 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 11:42:22,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:22,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 11:42:22,382 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 82 [2020-07-21 11:42:22,743 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2020-07-21 11:42:22,865 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 21 [2020-07-21 11:42:23,220 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2020-07-21 11:42:23,224 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:42:23,224 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:42:23,224 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:42:23,224 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:42:23,224 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 11:42:23,224 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:42:23,224 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:42:23,224 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-21 11:42:23,225 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-21 11:42:23,225 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-07-21 11:42:23,225 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-21 11:42:23,225 INFO L268 CegarLoopResult]: For program point L192(lines 192 352) no Hoare annotation was computed. [2020-07-21 11:42:23,225 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 123) no Hoare annotation was computed. [2020-07-21 11:42:23,225 INFO L268 CegarLoopResult]: For program point L382(lines 382 391) no Hoare annotation was computed. [2020-07-21 11:42:23,225 INFO L268 CegarLoopResult]: For program point L93(lines 93 410) no Hoare annotation was computed. [2020-07-21 11:42:23,225 INFO L268 CegarLoopResult]: For program point L27(lines 27 435) no Hoare annotation was computed. [2020-07-21 11:42:23,225 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 437) no Hoare annotation was computed. [2020-07-21 11:42:23,225 INFO L268 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-07-21 11:42:23,226 INFO L264 CegarLoopResult]: At program point L399(lines 129 400) the Hoare annotation is: (and (<= 1 main_~__VERIFIER_assert__cond~1) (<= 0 main_~main__scheme~0) (<= (+ main_~main__cp~0 1) main_~main__urilen~0) (<= 1 main_~__VERIFIER_assert__cond~3) (not (= 0 main_~main__scheme~0)) (<= 1 main_~main__cp~0) (<= 1 main_~__VERIFIER_assert__cond~2) (<= 1 main_~__VERIFIER_assert__cond~0)) [2020-07-21 11:42:23,226 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 253) no Hoare annotation was computed. [2020-07-21 11:42:23,226 INFO L268 CegarLoopResult]: For program point L102(lines 102 409) no Hoare annotation was computed. [2020-07-21 11:42:23,226 INFO L268 CegarLoopResult]: For program point L69(lines 69 414) no Hoare annotation was computed. [2020-07-21 11:42:23,226 INFO L264 CegarLoopResult]: At program point L325(lines 260 326) the Hoare annotation is: (let ((.cse0 (+ main_~main__cp~0 1))) (and (<= 2 main_~main__cp~0) (<= .cse0 main_~main__urilen~0) (<= 0 main_~main__c~0) (not (= .cse0 main_~main__urilen~0)) (let ((.cse1 (<= 0 main_~main__scheme~0)) (.cse2 (<= 1 main_~__VERIFIER_assert__cond~4)) (.cse3 (<= 1 main_~__VERIFIER_assert__cond~3)) (.cse4 (<= 1 main_~__VERIFIER_assert__cond~0)) (.cse5 (<= 1 main_~__VERIFIER_assert__cond~5)) (.cse6 (<= 1 main_~__VERIFIER_assert__cond~1)) (.cse7 (<= 1 main_~__VERIFIER_assert__cond~6)) (.cse8 (<= 1 main_~__VERIFIER_assert__cond~10)) (.cse9 (<= 1 main_~__VERIFIER_assert__cond~8)) (.cse10 (<= 1 main_~__VERIFIER_assert__cond~7)) (.cse11 (<= 1 main_~__VERIFIER_assert__cond~2)) (.cse12 (<= 1 main_~__VERIFIER_assert__cond~9)) (.cse13 (<= 1 main_~__VERIFIER_assert__cond~11))) (or (and .cse1 (< (+ main_~main__c~0 1) main_~main__tokenlen~0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse1 .cse2 .cse3 (<= 1 main_~__VERIFIER_assert__cond~12) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13))) (not (= 0 main_~main__scheme~0)))) [2020-07-21 11:42:23,226 INFO L268 CegarLoopResult]: For program point L292(lines 292 316) no Hoare annotation was computed. [2020-07-21 11:42:23,227 INFO L268 CegarLoopResult]: For program point L160(lines 160 357) no Hoare annotation was computed. [2020-07-21 11:42:23,227 INFO L268 CegarLoopResult]: For program point L61(lines 61 420) no Hoare annotation was computed. [2020-07-21 11:42:23,227 INFO L268 CegarLoopResult]: For program point L251(lines 251 327) no Hoare annotation was computed. [2020-07-21 11:42:23,227 INFO L268 CegarLoopResult]: For program point L185(lines 185 353) no Hoare annotation was computed. [2020-07-21 11:42:23,227 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-07-21 11:42:23,227 INFO L264 CegarLoopResult]: At program point L408(lines 102 409) the Hoare annotation is: (<= 1 main_~__VERIFIER_assert__cond~0) [2020-07-21 11:42:23,227 INFO L268 CegarLoopResult]: For program point L210(lines 210 344) no Hoare annotation was computed. [2020-07-21 11:42:23,227 INFO L268 CegarLoopResult]: For program point L111(line 111) no Hoare annotation was computed. [2020-07-21 11:42:23,227 INFO L268 CegarLoopResult]: For program point L45(lines 45 432) no Hoare annotation was computed. [2020-07-21 11:42:23,228 INFO L268 CegarLoopResult]: For program point L268(lines 268 320) no Hoare annotation was computed. [2020-07-21 11:42:23,228 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 294) no Hoare annotation was computed. [2020-07-21 11:42:23,228 INFO L268 CegarLoopResult]: For program point L202(lines 202 351) no Hoare annotation was computed. [2020-07-21 11:42:23,228 INFO L268 CegarLoopResult]: For program point L260(lines 260 326) no Hoare annotation was computed. [2020-07-21 11:42:23,228 INFO L268 CegarLoopResult]: For program point L384(line 384) no Hoare annotation was computed. [2020-07-21 11:42:23,228 INFO L268 CegarLoopResult]: For program point L95(line 95) no Hoare annotation was computed. [2020-07-21 11:42:23,228 INFO L268 CegarLoopResult]: For program point L153(lines 153 358) no Hoare annotation was computed. [2020-07-21 11:42:23,228 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2020-07-21 11:42:23,228 INFO L268 CegarLoopResult]: For program point L21(lines 21 436) no Hoare annotation was computed. [2020-07-21 11:42:23,229 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 437) no Hoare annotation was computed. [2020-07-21 11:42:23,229 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 282) no Hoare annotation was computed. [2020-07-21 11:42:23,229 INFO L268 CegarLoopResult]: For program point L294(line 294) no Hoare annotation was computed. [2020-07-21 11:42:23,229 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2020-07-21 11:42:23,229 INFO L268 CegarLoopResult]: For program point L63(lines 63 415) no Hoare annotation was computed. [2020-07-21 11:42:23,229 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 437) the Hoare annotation is: true [2020-07-21 11:42:23,229 INFO L268 CegarLoopResult]: For program point L253(line 253) no Hoare annotation was computed. [2020-07-21 11:42:23,229 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 11:42:23,229 INFO L268 CegarLoopResult]: For program point L121(lines 121 401) no Hoare annotation was computed. [2020-07-21 11:42:23,229 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-07-21 11:42:23,230 INFO L268 CegarLoopResult]: For program point L270(line 270) no Hoare annotation was computed. [2020-07-21 11:42:23,230 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 212) no Hoare annotation was computed. [2020-07-21 11:42:23,230 INFO L268 CegarLoopResult]: For program point L39(lines 39 433) no Hoare annotation was computed. [2020-07-21 11:42:23,230 INFO L268 CegarLoopResult]: For program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 372) no Hoare annotation was computed. [2020-07-21 11:42:23,230 INFO L268 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-07-21 11:42:23,230 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 187) no Hoare annotation was computed. [2020-07-21 11:42:23,230 INFO L268 CegarLoopResult]: For program point L370(lines 370 393) no Hoare annotation was computed. [2020-07-21 11:42:23,230 INFO L268 CegarLoopResult]: For program point L81(lines 81 412) no Hoare annotation was computed. [2020-07-21 11:42:23,230 INFO L268 CegarLoopResult]: For program point L304(lines 304 314) no Hoare annotation was computed. [2020-07-21 11:42:23,231 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 306) no Hoare annotation was computed. [2020-07-21 11:42:23,231 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 111) no Hoare annotation was computed. [2020-07-21 11:42:23,231 INFO L268 CegarLoopResult]: For program point L222(lines 222 342) no Hoare annotation was computed. [2020-07-21 11:42:23,231 INFO L268 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2020-07-21 11:42:23,231 INFO L268 CegarLoopResult]: For program point L57(lines 57 430) no Hoare annotation was computed. [2020-07-21 11:42:23,231 INFO L264 CegarLoopResult]: At program point L313(lines 228 342) the Hoare annotation is: (let ((.cse0 (+ main_~main__cp~0 1))) (and (<= 2 main_~main__cp~0) (<= .cse0 main_~main__urilen~0) (<= 0 main_~main__c~0) (not (= 0 main_~main__scheme~0)) (let ((.cse1 (<= 0 main_~main__scheme~0)) (.cse2 (<= 1 main_~__VERIFIER_assert__cond~4)) (.cse3 (<= 1 main_~__VERIFIER_assert__cond~3)) (.cse4 (<= 1 main_~__VERIFIER_assert__cond~0)) (.cse5 (<= 1 main_~__VERIFIER_assert__cond~5)) (.cse6 (<= 1 main_~__VERIFIER_assert__cond~1)) (.cse7 (<= 1 main_~__VERIFIER_assert__cond~6)) (.cse8 (<= 1 main_~__VERIFIER_assert__cond~8)) (.cse9 (<= 1 main_~main__cp~0)) (.cse10 (<= 1 main_~__VERIFIER_assert__cond~7)) (.cse11 (<= 1 main_~__VERIFIER_assert__cond~9)) (.cse12 (<= 1 main_~__VERIFIER_assert__cond~2))) (or (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (<= 1 main_~__VERIFIER_assert__cond~10) .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse1 (not (= .cse0 main_~main__urilen~0)) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12))))) [2020-07-21 11:42:23,232 INFO L268 CegarLoopResult]: For program point L280(lines 280 318) no Hoare annotation was computed. [2020-07-21 11:42:23,232 INFO L268 CegarLoopResult]: For program point L239(lines 239 329) no Hoare annotation was computed. [2020-07-21 11:42:23,232 INFO L268 CegarLoopResult]: For program point L173(lines 173 355) no Hoare annotation was computed. [2020-07-21 11:42:23,232 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 241) no Hoare annotation was computed. [2020-07-21 11:42:23,232 INFO L268 CegarLoopResult]: For program point L33(lines 33 434) no Hoare annotation was computed. [2020-07-21 11:42:23,232 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 95) no Hoare annotation was computed. [2020-07-21 11:42:23,232 INFO L268 CegarLoopResult]: For program point L372(line 372) no Hoare annotation was computed. [2020-07-21 11:42:23,232 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-07-21 11:42:23,233 INFO L268 CegarLoopResult]: For program point L306(line 306) no Hoare annotation was computed. [2020-07-21 11:42:23,233 INFO L268 CegarLoopResult]: For program point L141(lines 141 360) no Hoare annotation was computed. [2020-07-21 11:42:23,233 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 224) no Hoare annotation was computed. [2020-07-21 11:42:23,233 INFO L268 CegarLoopResult]: For program point L232(lines 232 336) no Hoare annotation was computed. [2020-07-21 11:42:23,233 INFO L268 CegarLoopResult]: For program point mainErr17ASSERT_VIOLATIONERROR_FUNCTION(line 384) no Hoare annotation was computed. [2020-07-21 11:42:23,233 INFO L268 CegarLoopResult]: For program point L133(lines 133 395) no Hoare annotation was computed. [2020-07-21 11:42:23,233 INFO L268 CegarLoopResult]: For program point L224(line 224) no Hoare annotation was computed. [2020-07-21 11:42:23,233 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 143) no Hoare annotation was computed. [2020-07-21 11:42:23,234 INFO L268 CegarLoopResult]: For program point L59(lines 59 425) no Hoare annotation was computed. [2020-07-21 11:42:23,234 INFO L268 CegarLoopResult]: For program point L282(line 282) no Hoare annotation was computed. [2020-07-21 11:42:23,234 INFO L268 CegarLoopResult]: For program point L51(lines 51 431) no Hoare annotation was computed. [2020-07-21 11:42:23,234 INFO L268 CegarLoopResult]: For program point L241(line 241) no Hoare annotation was computed. [2020-07-21 11:42:23,234 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 270) no Hoare annotation was computed. [2020-07-21 11:42:23,234 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 11:42:23,234 INFO L268 CegarLoopResult]: For program point L109(lines 109 403) no Hoare annotation was computed. [2020-07-21 11:42:23,234 INFO L264 CegarLoopResult]: At program point L390(lines 127 401) the Hoare annotation is: (and (<= 1 main_~__VERIFIER_assert__cond~1) (<= 0 main_~main__scheme~0) (<= (+ main_~main__cp~0 1) main_~main__urilen~0) (<= 1 main_~__VERIFIER_assert__cond~3) (<= 1 main_~main__cp~0) (not (= 0 main_~main__scheme~0)) (<= 1 main_~__VERIFIER_assert__cond~2) (<= 1 main_~__VERIFIER_assert__cond~0)) [2020-07-21 11:42:23,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:42:23 BoogieIcfgContainer [2020-07-21 11:42:23,260 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:42:23,262 INFO L168 Benchmark]: Toolchain (without parser) took 10649.87 ms. Allocated memory was 137.9 MB in the beginning and 280.5 MB in the end (delta: 142.6 MB). Free memory was 102.2 MB in the beginning and 106.5 MB in the end (delta: -4.3 MB). Peak memory consumption was 150.8 MB. Max. memory is 7.1 GB. [2020-07-21 11:42:23,263 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 11:42:23,264 INFO L168 Benchmark]: CACSL2BoogieTranslator took 418.56 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 101.7 MB in the beginning and 181.1 MB in the end (delta: -79.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-07-21 11:42:23,264 INFO L168 Benchmark]: Boogie Preprocessor took 50.27 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 178.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-21 11:42:23,265 INFO L168 Benchmark]: RCFGBuilder took 529.79 ms. Allocated memory is still 202.4 MB. Free memory was 178.5 MB in the beginning and 151.4 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-07-21 11:42:23,265 INFO L168 Benchmark]: TraceAbstraction took 9644.83 ms. Allocated memory was 202.4 MB in the beginning and 280.5 MB in the end (delta: 78.1 MB). Free memory was 150.7 MB in the beginning and 106.5 MB in the end (delta: 44.3 MB). Peak memory consumption was 134.9 MB. Max. memory is 7.1 GB. [2020-07-21 11:42:23,268 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 418.56 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 101.7 MB in the beginning and 181.1 MB in the end (delta: -79.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.27 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 178.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 529.79 ms. Allocated memory is still 202.4 MB. Free memory was 178.5 MB in the beginning and 151.4 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9644.83 ms. Allocated memory was 202.4 MB in the beginning and 280.5 MB in the end (delta: 78.1 MB). Free memory was 150.7 MB in the beginning and 106.5 MB in the end (delta: 44.3 MB). Peak memory consumption was 134.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 83]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 306]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 372]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 187]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 212]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 282]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 224]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 241]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 294]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 270]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 143]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 253]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 384]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 111]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 175]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 155]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 123]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 95]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: ((((((1 <= __VERIFIER_assert__cond && 0 <= main__scheme) && main__cp + 1 <= main__urilen) && 1 <= __VERIFIER_assert__cond) && 1 <= main__cp) && !(0 == main__scheme)) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond - InvariantResult [Line: 102]: Loop Invariant Derived loop invariant: 1 <= __VERIFIER_assert__cond - InvariantResult [Line: 228]: Loop Invariant Derived loop invariant: (((2 <= main__cp && main__cp + 1 <= main__urilen) && 0 <= main__c) && !(0 == main__scheme)) && (((((((((((((0 <= main__scheme && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) || ((((((((((((0 <= main__scheme && !(main__cp + 1 == main__urilen)) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond)) - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: ((((((1 <= __VERIFIER_assert__cond && 0 <= main__scheme) && main__cp + 1 <= main__urilen) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond - InvariantResult [Line: 260]: Loop Invariant Derived loop invariant: ((((2 <= main__cp && main__cp + 1 <= main__urilen) && 0 <= main__c) && !(main__cp + 1 == main__urilen)) && ((((((((((((((0 <= main__scheme && main__c + 1 < main__tokenlen) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) || (((((((((((((0 <= main__scheme && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond))) && !(0 == main__scheme) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 91 locations, 18 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.3s, OverallIterations: 21, TraceHistogramMax: 2, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1204 SDtfs, 2109 SDslu, 1278 SDs, 0 SdLazy, 935 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 734 GetRequests, 623 SyntacticMatches, 13 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 287 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 16 NumberOfFragments, 274 HoareAnnotationTreeSize, 9 FomulaSimplifications, 1724887 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 9 FomulaSimplificationsInter, 27050 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 657 NumberOfCodeBlocks, 657 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 695 ConstructedInterpolants, 0 QuantifiedInterpolants, 64050 SizeOfPredicates, 94 NumberOfNonLiveVariables, 2222 ConjunctsInSsa, 123 ConjunctsInUnsatCore, 23 InterpolantComputations, 19 PerfectInterpolantSequences, 4/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...