/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:43:26,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:43:26,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:43:26,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:43:26,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:43:26,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:43:26,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:43:26,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:43:26,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:43:26,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:43:26,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:43:26,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:43:26,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:43:26,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:43:26,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:43:26,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:43:26,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:43:26,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:43:26,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:43:26,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:43:26,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:43:26,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:43:26,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:43:26,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:43:26,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:43:26,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:43:26,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:43:26,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:43:26,820 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 14:43:26,837 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:43:26,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:43:26,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:43:26,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:43:26,840 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:43:26,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:43:26,840 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:43:26,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:43:26,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:43:26,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:43:26,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:43:26,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:43:26,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:43:26,842 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:43:26,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:43:26,842 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:43:26,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:43:26,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:43:26,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:43:26,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:43:26,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:43:26,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:43:26,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:43:26,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:43:26,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:43:26,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:43:26,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:43:26,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:43:26,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:43:26,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 14:43:27,151 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:43:27,165 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:43:27,169 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:43:27,171 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:43:27,171 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:43:27,172 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c [2020-07-20 14:43:27,267 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/842a757d5/07458f174e434f74a9f28586ce3057db/FLAG7c70264fa [2020-07-20 14:43:27,811 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:43:27,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c [2020-07-20 14:43:27,819 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/842a757d5/07458f174e434f74a9f28586ce3057db/FLAG7c70264fa [2020-07-20 14:43:28,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/842a757d5/07458f174e434f74a9f28586ce3057db [2020-07-20 14:43:28,139 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:43:28,143 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:43:28,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:43:28,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:43:28,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:43:28,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:43:28" (1/1) ... [2020-07-20 14:43:28,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@380caa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:43:28, skipping insertion in model container [2020-07-20 14:43:28,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:43:28" (1/1) ... [2020-07-20 14:43:28,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:43:28,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:43:28,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:43:28,424 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:43:28,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:43:28,465 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:43:28,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:43:28 WrapperNode [2020-07-20 14:43:28,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:43:28,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:43:28,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:43:28,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:43:28,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:43:28" (1/1) ... [2020-07-20 14:43:28,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:43:28" (1/1) ... [2020-07-20 14:43:28,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:43:28" (1/1) ... [2020-07-20 14:43:28,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:43:28" (1/1) ... [2020-07-20 14:43:28,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:43:28" (1/1) ... [2020-07-20 14:43:28,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:43:28" (1/1) ... [2020-07-20 14:43:28,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:43:28" (1/1) ... [2020-07-20 14:43:28,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:43:28,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:43:28,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:43:28,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:43:28,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:43:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:43:28,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:43:28,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:43:28,674 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:43:28,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:43:28,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 14:43:28,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 14:43:28,674 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:43:28,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:43:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:43:28,982 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:43:28,983 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 14:43:28,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:43:28 BoogieIcfgContainer [2020-07-20 14:43:28,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:43:28,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:43:28,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:43:28,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:43:28,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:43:28" (1/3) ... [2020-07-20 14:43:28,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15acd8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:43:28, skipping insertion in model container [2020-07-20 14:43:28,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:43:28" (2/3) ... [2020-07-20 14:43:28,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15acd8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:43:28, skipping insertion in model container [2020-07-20 14:43:28,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:43:28" (3/3) ... [2020-07-20 14:43:29,000 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c.v+lhb-reducer.c [2020-07-20 14:43:29,015 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:43:29,026 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:43:29,044 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:43:29,075 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:43:29,076 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:43:29,076 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:43:29,076 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:43:29,076 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:43:29,077 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:43:29,077 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:43:29,077 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:43:29,099 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-07-20 14:43:29,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 14:43:29,107 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:43:29,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:43:29,109 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:43:29,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:43:29,117 INFO L82 PathProgramCache]: Analyzing trace with hash 446778609, now seen corresponding path program 1 times [2020-07-20 14:43:29,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:43:29,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209546425] [2020-07-20 14:43:29,129 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:43:29,709 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:43:29,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:43:29,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 14:43:29,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:43:29,831 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:43:29,834 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:43:29,836 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:43:29,843 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:43:29,848 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:43:29,850 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:43:29,853 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:43:29,857 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:43:29,859 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 14:43:29,861 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 14:43:29,867 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 14:43:29,879 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 14:43:31,965 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 14:43:36,130 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 14:43:36,132 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 14:43:36,145 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 14:43:36,156 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 14:43:38,235 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 14:43:48,712 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (<= 1 c_main_~__VERIFIER_assert__cond~0))) (or (and (exists ((main_~main__x~0 Int)) (and (= 0 (mod (mod (mod main_~main__x~0 4294967296) 3) 4294967296)) (= 0 (mod (mod main_~main__x~0 4294967296) 3)) (not (= 0 (mod (+ (mod (mod main_~main__x~0 4294967296) 3) 4294967293) 4294967296))) (= 1 (mod (mod (mod (+ main_~main__x~0 4294967294) 4294967296) 3) 4294967296)))) .cse0) (and (exists ((main_~main__x~0 Int)) (and (<= 0 (mod main_~main__x~0 4294967296)) (not (= 0 (mod (+ (mod (mod main_~main__x~0 4294967296) 3) 4294967293) 4294967296))) (= 1 (mod (mod (mod (+ main_~main__x~0 4294967294) 4294967296) 3) 4294967296)) (not (= 0 (mod (mod (mod main_~main__x~0 4294967296) 3) 4294967296))))) (<= 0 c_main_~__VERIFIER_assert__cond~0)) (and (exists ((main_~main__x~0 Int)) (and (= 0 (mod (mod (mod main_~main__x~0 4294967296) 3) 4294967296)) (<= 0 (mod main_~main__x~0 4294967296)) (not (= 0 (mod (+ (mod (mod main_~main__x~0 4294967296) 3) 4294967293) 4294967296))) (= 1 (mod (mod (mod (+ main_~main__x~0 4294967294) 4294967296) 3) 4294967296)))) .cse0))) is different from false [2020-07-20 14:43:50,797 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 14:44:03,254 WARN L838 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 Int)) (and (<= 0 (mod main_~main__x~0 4294967296)) (not (= 0 (mod (+ (mod (mod main_~main__x~0 4294967296) 3) 4294967293) 4294967296))) (= 1 (mod (mod (mod (+ main_~main__x~0 4294967294) 4294967296) 3) 4294967296)) (not (= 0 (mod (mod (mod main_~main__x~0 4294967296) 3) 4294967296))))) is different from false [2020-07-20 14:44:05,345 WARN L860 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 Int)) (and (<= 0 (mod main_~main__x~0 4294967296)) (not (= 0 (mod (+ (mod (mod main_~main__x~0 4294967296) 3) 4294967293) 4294967296))) (= 1 (mod (mod (mod (+ main_~main__x~0 4294967294) 4294967296) 3) 4294967296)) (not (= 0 (mod (mod (mod main_~main__x~0 4294967296) 3) 4294967296))))) is different from true [2020-07-20 14:44:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:44:05,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:44:05,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209546425] [2020-07-20 14:44:05,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:44:05,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 14:44:05,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900611945] [2020-07-20 14:44:05,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:44:05,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:44:05,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:44:05,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2020-07-20 14:44:05,384 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2020-07-20 14:44:22,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:44:22,115 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2020-07-20 14:44:22,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:44:22,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-07-20 14:44:22,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:44:22,127 INFO L225 Difference]: With dead ends: 42 [2020-07-20 14:44:22,127 INFO L226 Difference]: Without dead ends: 28 [2020-07-20 14:44:22,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2020-07-20 14:44:22,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-20 14:44:22,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-07-20 14:44:22,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-20 14:44:22,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2020-07-20 14:44:22,176 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 15 [2020-07-20 14:44:22,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:44:22,176 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2020-07-20 14:44:22,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:44:22,177 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2020-07-20 14:44:22,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 14:44:22,178 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:44:22,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:44:22,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:44:22,380 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:44:22,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:44:22,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1003929308, now seen corresponding path program 1 times [2020-07-20 14:44:22,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:44:22,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045348544] [2020-07-20 14:44:22,385 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in