/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 DAGSIZE --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/loops-crafted-1/sumt7.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 22:48:38,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 22:48:38,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 22:48:38,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-20 22:48:38,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 22:48:38,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 22:48:38,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 22:48:38,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 22:48:38,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 22:48:38,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 22:48:38,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 22:48:38,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 22:48:38,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 22:48:38,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 22:48:38,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 22:48:38,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 22:48:38,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 22:48:38,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 22:48:38,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 22:48:38,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 22:48:38,963 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 22:48:38,998 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 22:48:39,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 22:48:39,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 22:48:39,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 22:48:39,006 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 22:48:39,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 22:48:39,006 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 22:48:39,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 22:48:39,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 22:48:39,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 22:48:39,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 22:48:39,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 22:48:39,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 22:48:39,008 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 22:48:39,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 22:48:39,008 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 22:48:39,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 22:48:39,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 22:48:39,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 22:48:39,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 22:48:39,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 22:48:39,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:48:39,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 22:48:39,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 22:48:39,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 22:48:39,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 22:48:39,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:48:39,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 22:48:39,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 22:48:39,012 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 -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 22:48:39,345 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 22:48:39,369 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 22:48:39,373 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 22:48:39,374 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 22:48:39,375 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 22:48:39,376 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt7.c [2020-07-20 22:48:39,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a1b094c6/b1402b29cb914ac9b65c5496472c4bd3/FLAG33d4d745e [2020-07-20 22:48:39,971 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 22:48:39,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt7.c [2020-07-20 22:48:39,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a1b094c6/b1402b29cb914ac9b65c5496472c4bd3/FLAG33d4d745e [2020-07-20 22:48:40,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a1b094c6/b1402b29cb914ac9b65c5496472c4bd3 [2020-07-20 22:48:40,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 22:48:40,365 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 22:48:40,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 22:48:40,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 22:48:40,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 22:48:40,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:48:40" (1/1) ... [2020-07-20 22:48:40,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77b47dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:40, skipping insertion in model container [2020-07-20 22:48:40,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:48:40" (1/1) ... [2020-07-20 22:48:40,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 22:48:40,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 22:48:40,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:48:40,576 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 22:48:40,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:48:40,614 INFO L208 MainTranslator]: Completed translation [2020-07-20 22:48:40,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:40 WrapperNode [2020-07-20 22:48:40,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 22:48:40,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 22:48:40,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 22:48:40,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 22:48:40,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:40" (1/1) ... [2020-07-20 22:48:40,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:40" (1/1) ... [2020-07-20 22:48:40,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:40" (1/1) ... [2020-07-20 22:48:40,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:40" (1/1) ... [2020-07-20 22:48:40,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:40" (1/1) ... [2020-07-20 22:48:40,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:40" (1/1) ... [2020-07-20 22:48:40,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:40" (1/1) ... [2020-07-20 22:48:40,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 22:48:40,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 22:48:40,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 22:48:40,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 22:48:40,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:40" (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 22:48:40,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 22:48:40,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 22:48:40,825 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 22:48:40,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 22:48:40,825 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 22:48:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 22:48:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 22:48:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 22:48:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 22:48:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 22:48:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 22:48:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 22:48:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 22:48:41,111 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 22:48:41,111 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 22:48:41,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:48:41 BoogieIcfgContainer [2020-07-20 22:48:41,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 22:48:41,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 22:48:41,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 22:48:41,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 22:48:41,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:48:40" (1/3) ... [2020-07-20 22:48:41,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736d90c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:48:41, skipping insertion in model container [2020-07-20 22:48:41,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:40" (2/3) ... [2020-07-20 22:48:41,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736d90c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:48:41, skipping insertion in model container [2020-07-20 22:48:41,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:48:41" (3/3) ... [2020-07-20 22:48:41,128 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt7.c [2020-07-20 22:48:41,141 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 22:48:41,150 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 22:48:41,169 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 22:48:41,200 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 22:48:41,200 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 22:48:41,200 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 22:48:41,201 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 22:48:41,201 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 22:48:41,201 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 22:48:41,201 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 22:48:41,202 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 22:48:41,223 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-20 22:48:41,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 22:48:41,230 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:48:41,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:48:41,232 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:48:41,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:48:41,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1473118151, now seen corresponding path program 1 times [2020-07-20 22:48:41,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:48:41,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871362685] [2020-07-20 22:48:41,254 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 22:48:41,363 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:48:41,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:48:41,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 22:48:41,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:48:41,558 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 22:48:41,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:48:41,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871362685] [2020-07-20 22:48:41,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:48:41,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 22:48:41,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681783424] [2020-07-20 22:48:41,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 22:48:41,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:48:41,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 22:48:41,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:48:41,588 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 7 states. [2020-07-20 22:48:41,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:48:41,812 INFO L93 Difference]: Finished difference Result 68 states and 99 transitions. [2020-07-20 22:48:41,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 22:48:41,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-07-20 22:48:41,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:48:41,826 INFO L225 Difference]: With dead ends: 68 [2020-07-20 22:48:41,826 INFO L226 Difference]: Without dead ends: 37 [2020-07-20 22:48:41,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 22:48:41,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-20 22:48:41,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-20 22:48:41,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-20 22:48:41,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2020-07-20 22:48:41,881 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 14 [2020-07-20 22:48:41,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:48:41,881 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2020-07-20 22:48:41,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 22:48:41,882 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2020-07-20 22:48:41,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 22:48:41,883 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:48:41,883 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:48:42,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:48:42,097 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:48:42,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:48:42,098 INFO L82 PathProgramCache]: Analyzing trace with hash 633537884, now seen corresponding path program 1 times [2020-07-20 22:48:42,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:48:42,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954783516] [2020-07-20 22:48:42,099 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:48:42,192 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:48:42,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:48:42,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-20 22:48:42,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:48:42,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:48:42,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:48:42,460 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:48:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 22:48:42,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954783516] [2020-07-20 22:48:42,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 22:48:42,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2020-07-20 22:48:42,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066206638] [2020-07-20 22:48:42,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 22:48:42,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:48:42,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 22:48:42,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-07-20 22:48:42,660 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand 6 states. [2020-07-20 22:48:56,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:48:56,242 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2020-07-20 22:48:56,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 22:48:56,242 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-07-20 22:48:56,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:48:56,245 INFO L225 Difference]: With dead ends: 52 [2020-07-20 22:48:56,245 INFO L226 Difference]: Without dead ends: 50 [2020-07-20 22:48:56,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-07-20 22:48:56,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-20 22:48:56,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-07-20 22:48:56,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-20 22:48:56,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2020-07-20 22:48:56,258 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 27 [2020-07-20 22:48:56,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:48:56,258 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2020-07-20 22:48:56,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 22:48:56,259 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2020-07-20 22:48:56,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-20 22:48:56,260 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:48:56,260 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:48:56,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:48:56,462 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:48:56,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:48:56,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1461697819, now seen corresponding path program 1 times [2020-07-20 22:48:56,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:48:56,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370632940] [2020-07-20 22:48:56,465 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:48:56,527 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:48:56,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:48:56,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-20 22:48:56,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:48:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 22:48:56,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:48:56,761 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:49:01,017 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:49:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 9 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 22:49:13,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370632940] [2020-07-20 22:49:13,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:49:13,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2020-07-20 22:49:13,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464293851] [2020-07-20 22:49:13,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 22:49:13,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:49:13,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 22:49:13,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=62, Unknown=8, NotChecked=0, Total=110 [2020-07-20 22:49:13,516 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand 11 states. [2020-07-20 22:49:15,751 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse1 (+ c_main_~l~0 1))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296))))) is different from false [2020-07-20 22:49:47,019 WARN L193 SmtUtils]: Spent 24.95 s on a formula simplification that was a NOOP. DAG size: 33 [2020-07-20 22:49:57,397 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse0 (+ c_main_~l~0 1))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296))))) is different from false [2020-07-20 22:51:54,797 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296))) is different from false [2020-07-20 22:52:14,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:52:14,153 INFO L93 Difference]: Finished difference Result 104 states and 143 transitions. [2020-07-20 22:52:14,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 22:52:14,275 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-07-20 22:52:14,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:52:14,280 INFO L225 Difference]: With dead ends: 104 [2020-07-20 22:52:14,280 INFO L226 Difference]: Without dead ends: 76 [2020-07-20 22:52:14,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 54.6s TimeCoverageRelationStatistics Valid=55, Invalid=75, Unknown=14, NotChecked=66, Total=210 [2020-07-20 22:52:14,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-20 22:52:14,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 69. [2020-07-20 22:52:14,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-20 22:52:14,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2020-07-20 22:52:14,306 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 36 [2020-07-20 22:52:14,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:52:14,306 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2020-07-20 22:52:14,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 22:52:14,307 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2020-07-20 22:52:14,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-20 22:52:14,308 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:52:14,308 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:52:14,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:52:14,510 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:52:14,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:52:14,511 INFO L82 PathProgramCache]: Analyzing trace with hash 782958555, now seen corresponding path program 1 times [2020-07-20 22:52:14,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:52:14,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097793455] [2020-07-20 22:52:14,512 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:52:14,626 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:52:14,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:52:14,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 31 conjunts are in the unsatisfiable core [2020-07-20 22:52:14,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:52:14,860 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 22:52:14,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:52:14,890 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:52:49,338 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 0 refuted. 13 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 22:52:49,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097793455] [2020-07-20 22:52:49,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:52:49,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-07-20 22:52:49,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235609188] [2020-07-20 22:52:49,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-20 22:52:49,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:52:49,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-20 22:52:49,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=229, Unknown=16, NotChecked=0, Total=306 [2020-07-20 22:52:49,342 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand 18 states. [2020-07-20 22:53:00,441 WARN L193 SmtUtils]: Spent 4.27 s on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 22:54:19,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:54:19,345 INFO L93 Difference]: Finished difference Result 151 states and 212 transitions. [2020-07-20 22:54:19,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-20 22:54:19,346 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2020-07-20 22:54:19,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:54:19,348 INFO L225 Difference]: With dead ends: 151 [2020-07-20 22:54:19,348 INFO L226 Difference]: Without dead ends: 117 [2020-07-20 22:54:19,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 61 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 46.6s TimeCoverageRelationStatistics Valid=73, Invalid=288, Unknown=19, NotChecked=0, Total=380 [2020-07-20 22:54:19,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-07-20 22:54:19,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 109. [2020-07-20 22:54:19,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-07-20 22:54:19,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 144 transitions. [2020-07-20 22:54:19,369 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 144 transitions. Word has length 40 [2020-07-20 22:54:19,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:54:19,370 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 144 transitions. [2020-07-20 22:54:19,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-20 22:54:19,370 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 144 transitions. [2020-07-20 22:54:19,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-20 22:54:19,372 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:54:19,372 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:54:19,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:54:19,574 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:54:19,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:54:19,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1571070263, now seen corresponding path program 1 times [2020-07-20 22:54:19,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:54:19,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379006727] [2020-07-20 22:54:19,577 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:54:19,813 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:54:19,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:54:19,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 34 conjunts are in the unsatisfiable core [2020-07-20 22:54:19,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:54:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 48 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-20 22:54:19,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:54:20,127 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:54:26,609 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:54:33,077 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:54:41,678 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:54:52,421 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 44 refuted. 4 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-20 22:54:52,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379006727] [2020-07-20 22:54:52,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:54:52,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2020-07-20 22:54:52,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825148097] [2020-07-20 22:54:52,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-20 22:54:52,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:54:52,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-20 22:54:52,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=174, Unknown=15, NotChecked=0, Total=272 [2020-07-20 22:54:52,436 INFO L87 Difference]: Start difference. First operand 109 states and 144 transitions. Second operand 17 states. [2020-07-20 22:54:54,813 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)))) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse2 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296))))) is different from false [2020-07-20 22:54:56,964 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)))) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse2 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296))))) is different from true [2020-07-20 22:54:59,101 WARN L860 $PredicateComparison]: unable to prove that (and (or (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296))) (let ((.cse0 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296))))) is different from true [2020-07-20 22:55:01,223 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse1 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296))))) is different from false [2020-07-20 22:55:45,901 WARN L193 SmtUtils]: Spent 23.43 s on a formula simplification that was a NOOP. DAG size: 35 [2020-07-20 22:55:59,143 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 1))) (or (= (mod (mod (mod .cse0 4294967296) 7) 4294967296) 0) (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296))))) is different from false [2020-07-20 22:56:01,259 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 1))) (or (= (mod (mod (mod .cse0 4294967296) 7) 4294967296) 0) (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296))))) is different from true [2020-07-20 22:56:57,286 WARN L193 SmtUtils]: Spent 23.41 s on a formula simplification that was a NOOP. DAG size: 33 [2020-07-20 22:57:13,020 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 1))) (or (= (mod (mod (mod .cse1 4294967296) 7) 4294967296) 0) (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)))) (let ((.cse2 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296))))) is different from false [2020-07-20 22:58:16,544 WARN L193 SmtUtils]: Spent 35.95 s on a formula simplification that was a NOOP. DAG size: 48 [2020-07-20 22:58:35,676 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 1))) (or (= (mod (mod (mod .cse0 4294967296) 7) 4294967296) 0) (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)))) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse1 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296))))) is different from false [2020-07-20 22:58:46,273 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 1))) (or (= (mod (mod (mod .cse0 4294967296) 7) 4294967296) 0) (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)))) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296))) is different from false [2020-07-20 22:59:20,245 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 1))) (or (= (mod (mod (mod .cse1 4294967296) 7) 4294967296) 0) (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)))) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296))) is different from false [2020-07-20 22:59:35,067 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 1))) (or (= (mod (mod (mod .cse1 4294967296) 7) 4294967296) 0) (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296))))) is different from true [2020-07-20 22:59:41,410 WARN L838 $PredicateComparison]: unable to prove that (and (or (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296))) (let ((.cse0 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296))))) is different from false [2020-07-20 23:00:16,957 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse0 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296))))) is different from false [2020-07-20 23:00:27,786 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse1 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296))))) is different from false [2020-07-20 23:00:35,911 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 1))) (or (= (mod (mod (mod .cse1 4294967296) 7) 4294967296) 0) (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)))) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse2 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296))))) is different from false [2020-07-20 23:00:38,025 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 1))) (or (= (mod (mod (mod .cse1 4294967296) 7) 4294967296) 0) (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)))) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse2 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296))))) is different from true [2020-07-20 23:00:40,150 WARN L838 $PredicateComparison]: unable to prove that (and (or (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296))) (let ((.cse0 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 1))) (or (= (mod (mod (mod .cse1 4294967296) 7) 4294967296) 0) (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296))))) is different from false [2020-07-20 23:01:41,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:01:41,524 INFO L93 Difference]: Finished difference Result 257 states and 374 transitions. [2020-07-20 23:01:41,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-07-20 23:01:41,533 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 61 [2020-07-20 23:01:41,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:01:41,536 INFO L225 Difference]: With dead ends: 257 [2020-07-20 23:01:41,536 INFO L226 Difference]: Without dead ends: 191 [2020-07-20 23:01:41,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 227.3s TimeCoverageRelationStatistics Valid=148, Invalid=226, Unknown=62, NotChecked=686, Total=1122 [2020-07-20 23:01:41,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-07-20 23:01:41,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 151. [2020-07-20 23:01:41,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-07-20 23:01:41,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 209 transitions. [2020-07-20 23:01:41,572 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 209 transitions. Word has length 61 [2020-07-20 23:01:41,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:01:41,573 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 209 transitions. [2020-07-20 23:01:41,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-20 23:01:41,573 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 209 transitions. [2020-07-20 23:01:41,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-20 23:01:41,575 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:01:41,575 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 23:01:41,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:01:41,783 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 23:01:41,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:01:41,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1783764686, now seen corresponding path program 1 times [2020-07-20 23:01:41,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:01:41,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631750659] [2020-07-20 23:01:41,786 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in