/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-crafted/simple_vardep_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:29:21,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:29:21,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:29:21,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:29:21,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:29:21,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:29:21,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:29:21,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:29:21,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:29:21,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:29:21,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:29:21,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:29:21,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:29:21,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:29:21,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:29:21,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:29:21,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:29:21,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:29:21,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:29:21,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:29:21,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:29:21,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:29:21,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:29:21,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:29:21,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:29:21,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:29:21,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:29:21,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:29:21,650 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 14:29:21,669 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:29:21,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:29:21,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:29:21,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:29:21,671 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:29:21,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:29:21,673 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:29:21,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:29:21,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:29:21,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:29:21,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:29:21,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:29:21,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:29:21,675 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:29:21,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:29:21,675 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:29:21,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:29:21,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:29:21,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:29:21,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:29:21,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:29:21,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:29:21,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:29:21,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:29:21,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:29:21,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:29:21,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:21,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:29:21,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:29:21,679 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 14:29:22,006 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:29:22,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:29:22,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:29:22,026 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:29:22,026 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:29:22,027 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-07-20 14:29:22,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc93ec91/4bca0c40f1e942ad89ee2533b513eacd/FLAG9bf1fbf8f [2020-07-20 14:29:22,556 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:29:22,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-07-20 14:29:22,564 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc93ec91/4bca0c40f1e942ad89ee2533b513eacd/FLAG9bf1fbf8f [2020-07-20 14:29:22,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc93ec91/4bca0c40f1e942ad89ee2533b513eacd [2020-07-20 14:29:22,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:29:22,958 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:29:22,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:29:22,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:29:22,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:29:22,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:29:22" (1/1) ... [2020-07-20 14:29:22,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c5c8d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:22, skipping insertion in model container [2020-07-20 14:29:22,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:29:22" (1/1) ... [2020-07-20 14:29:22,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:29:22,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:29:23,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:29:23,171 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:29:23,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:29:23,200 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:29:23,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:23 WrapperNode [2020-07-20 14:29:23,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:29:23,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:29:23,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:29:23,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:29:23,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:23" (1/1) ... [2020-07-20 14:29:23,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:23" (1/1) ... [2020-07-20 14:29:23,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:23" (1/1) ... [2020-07-20 14:29:23,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:23" (1/1) ... [2020-07-20 14:29:23,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:23" (1/1) ... [2020-07-20 14:29:23,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:23" (1/1) ... [2020-07-20 14:29:23,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:23" (1/1) ... [2020-07-20 14:29:23,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:29:23,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:29:23,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:29:23,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:29:23,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:23" (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 14:29:23,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:29:23,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:29:23,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 14:29:23,372 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:29:23,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:29:23,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 14:29:23,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:29:23,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:29:23,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:29:23,536 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:29:23,537 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 14:29:23,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:29:23 BoogieIcfgContainer [2020-07-20 14:29:23,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:29:23,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:29:23,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:29:23,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:29:23,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:29:22" (1/3) ... [2020-07-20 14:29:23,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644e4a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:29:23, skipping insertion in model container [2020-07-20 14:29:23,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:23" (2/3) ... [2020-07-20 14:29:23,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644e4a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:29:23, skipping insertion in model container [2020-07-20 14:29:23,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:29:23" (3/3) ... [2020-07-20 14:29:23,548 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_vardep_2.c [2020-07-20 14:29:23,557 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:29:23,564 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:29:23,579 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:29:23,603 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:29:23,603 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:29:23,603 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:29:23,604 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:29:23,604 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:29:23,604 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:29:23,604 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:29:23,604 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:29:23,624 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-20 14:29:23,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 14:29:23,630 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:23,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:23,631 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:23,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:23,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1847991872, now seen corresponding path program 1 times [2020-07-20 14:29:23,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:23,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390114686] [2020-07-20 14:29:23,645 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 14:29:23,722 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:29:23,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:23,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 14:29:23,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:23,878 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 14:29:23,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:29:23,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390114686] [2020-07-20 14:29:23,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:29:23,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 14:29:23,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102807180] [2020-07-20 14:29:23,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:29:23,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:23,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:29:23,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:29:23,906 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2020-07-20 14:29:24,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:24,026 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2020-07-20 14:29:24,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:29:24,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-07-20 14:29:24,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:24,038 INFO L225 Difference]: With dead ends: 36 [2020-07-20 14:29:24,038 INFO L226 Difference]: Without dead ends: 20 [2020-07-20 14:29:24,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:29:24,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-20 14:29:24,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-07-20 14:29:24,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-20 14:29:24,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-07-20 14:29:24,082 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-07-20 14:29:24,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:24,083 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-07-20 14:29:24,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:29:24,084 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-20 14:29:24,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 14:29:24,085 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:24,085 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:24,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:24,300 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:24,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:24,302 INFO L82 PathProgramCache]: Analyzing trace with hash 982254813, now seen corresponding path program 1 times [2020-07-20 14:29:24,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:24,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801011074] [2020-07-20 14:29:24,304 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:24,355 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:24,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:24,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-20 14:29:24,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:24,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:24,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:29:24,545 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:29:28,806 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:29:37,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:37,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801011074] [2020-07-20 14:29:37,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:29:37,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-20 14:29:37,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679059294] [2020-07-20 14:29:37,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 14:29:37,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:37,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 14:29:37,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=58, Unknown=6, NotChecked=0, Total=90 [2020-07-20 14:29:37,236 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2020-07-20 14:29:58,152 WARN L193 SmtUtils]: Spent 14.33 s on a formula simplification that was a NOOP. DAG size: 48 [2020-07-20 14:30:18,616 WARN L193 SmtUtils]: Spent 8.19 s on a formula simplification that was a NOOP. DAG size: 32 [2020-07-20 14:30:29,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:30:29,028 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2020-07-20 14:30:29,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 14:30:29,029 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-07-20 14:30:29,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:30:29,031 INFO L225 Difference]: With dead ends: 34 [2020-07-20 14:30:29,031 INFO L226 Difference]: Without dead ends: 32 [2020-07-20 14:30:29,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 51.8s TimeCoverageRelationStatistics Valid=46, Invalid=96, Unknown=14, NotChecked=0, Total=156 [2020-07-20 14:30:29,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-20 14:30:29,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-07-20 14:30:29,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-20 14:30:29,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-07-20 14:30:29,048 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 16 [2020-07-20 14:30:29,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:30:29,048 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-07-20 14:30:29,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 14:30:29,049 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-07-20 14:30:29,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-20 14:30:29,051 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:30:29,051 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:30:29,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:30:29,253 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:30:29,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:30:29,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1130438097, now seen corresponding path program 2 times [2020-07-20 14:30:29,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:30:29,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698577191] [2020-07-20 14:30:29,256 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:30:29,476 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:30:29,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:30:29,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 45 conjunts are in the unsatisfiable core [2020-07-20 14:30:29,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:30:29,647 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-20 14:30:29,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:30:29,681 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:30:31,785 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 14:30:35,921 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:30:44,196 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:30:56,575 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:31:13,018 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:31:33,741 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 14:31:33,751 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:31:58,222 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 0 refuted. 30 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-20 14:31:58,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698577191] [2020-07-20 14:31:58,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:31:58,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-07-20 14:31:58,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463527820] [2020-07-20 14:31:58,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-20 14:31:58,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:31:58,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-20 14:31:58,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=182, Unknown=42, NotChecked=0, Total=306 [2020-07-20 14:31:58,225 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 18 states. [2020-07-20 14:32:00,659 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~i~0 3)) (.cse1 (* c_main_~i~0 2))) (and (= (mod (+ .cse0 6) 4294967296) (mod (+ c_main_~k~0 6) 4294967296)) (= (mod c_main_~j~0 4294967296) (mod .cse1 4294967296)) (= (mod (+ .cse1 4) 4294967296) (mod (+ c_main_~j~0 4) 4294967296)) (= (mod c_main_~k~0 4294967296) (mod .cse0 4294967296)) (= (mod (+ .cse0 3) 4294967296) (mod (+ c_main_~k~0 3) 4294967296)) (= (mod (+ c_main_~k~0 9) 4294967296) (mod (+ .cse0 9) 4294967296)) (= (mod (+ .cse1 12) 4294967296) (mod (+ c_main_~j~0 12) 4294967296)) (= (mod (+ .cse1 6) 4294967296) (mod (+ c_main_~j~0 6) 4294967296)) (= (mod (+ .cse0 15) 4294967296) (mod (+ c_main_~k~0 15) 4294967296)) (= (mod (+ .cse0 12) 4294967296) (mod (+ c_main_~k~0 12) 4294967296)) (= (mod (+ c_main_~j~0 8) 4294967296) (mod (+ .cse1 8) 4294967296)) (= (mod (+ .cse0 18) 4294967296) (mod (+ c_main_~k~0 18) 4294967296)) (= (mod (+ c_main_~j~0 2) 4294967296) (mod (+ .cse1 2) 4294967296)) (= (mod (+ c_main_~j~0 10) 4294967296) (mod (+ .cse1 10) 4294967296)))) is different from false [2020-07-20 14:32:02,745 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~i~0 3)) (.cse1 (* c_main_~i~0 2))) (and (= (mod (+ .cse0 6) 4294967296) (mod (+ c_main_~k~0 6) 4294967296)) (= (mod (+ .cse1 6) 4294967296) (mod (+ c_main_~j~0 6) 4294967296)) (= (mod (+ .cse0 15) 4294967296) (mod (+ c_main_~k~0 15) 4294967296)) (= (mod (+ .cse0 12) 4294967296) (mod (+ c_main_~k~0 12) 4294967296)) (= (mod (+ .cse1 4) 4294967296) (mod (+ c_main_~j~0 4) 4294967296)) (= (mod (+ c_main_~j~0 8) 4294967296) (mod (+ .cse1 8) 4294967296)) (= (mod (+ c_main_~j~0 2) 4294967296) (mod (+ .cse1 2) 4294967296)) (= (mod (+ .cse0 3) 4294967296) (mod (+ c_main_~k~0 3) 4294967296)) (= (mod (+ c_main_~k~0 9) 4294967296) (mod (+ .cse0 9) 4294967296)) (= (mod (+ c_main_~j~0 10) 4294967296) (mod (+ .cse1 10) 4294967296)))) is different from false [2020-07-20 14:32:04,760 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_main_~i~0 2)) (.cse0 (* c_main_~i~0 3))) (and (= (mod (+ .cse0 6) 4294967296) (mod (+ c_main_~k~0 6) 4294967296)) (= (mod c_main_~j~0 4294967296) (mod .cse1 4294967296)) (= (mod (+ .cse1 6) 4294967296) (mod (+ c_main_~j~0 6) 4294967296)) (= (mod (+ .cse0 12) 4294967296) (mod (+ c_main_~k~0 12) 4294967296)) (= (mod (+ .cse1 4) 4294967296) (mod (+ c_main_~j~0 4) 4294967296)) (= (mod c_main_~k~0 4294967296) (mod .cse0 4294967296)) (= (mod (+ c_main_~j~0 8) 4294967296) (mod (+ .cse1 8) 4294967296)) (= (mod (+ c_main_~j~0 2) 4294967296) (mod (+ .cse1 2) 4294967296)) (= (mod (+ .cse0 3) 4294967296) (mod (+ c_main_~k~0 3) 4294967296)) (= (mod (+ c_main_~k~0 9) 4294967296) (mod (+ .cse0 9) 4294967296)))) is different from false [2020-07-20 14:32:48,577 WARN L193 SmtUtils]: Spent 22.70 s on a formula simplification that was a NOOP. DAG size: 69 [2020-07-20 14:34:16,060 WARN L193 SmtUtils]: Spent 56.17 s on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2020-07-20 14:35:27,994 WARN L193 SmtUtils]: Spent 27.31 s on a formula simplification. DAG size of input: 48 DAG size of output: 28 [2020-07-20 14:36:28,037 WARN L193 SmtUtils]: Spent 8.23 s on a formula simplification that was a NOOP. DAG size: 32 [2020-07-20 14:37:04,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:37:04,880 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2020-07-20 14:37:04,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-20 14:37:04,882 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2020-07-20 14:37:04,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:37:04,885 INFO L225 Difference]: With dead ends: 52 [2020-07-20 14:37:04,885 INFO L226 Difference]: Without dead ends: 50 [2020-07-20 14:37:04,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 323.3s TimeCoverageRelationStatistics Valid=141, Invalid=277, Unknown=100, NotChecked=132, Total=650 [2020-07-20 14:37:04,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-20 14:37:04,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-07-20 14:37:04,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-07-20 14:37:04,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2020-07-20 14:37:04,905 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 40 [2020-07-20 14:37:04,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:37:04,906 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2020-07-20 14:37:04,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-20 14:37:04,906 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2020-07-20 14:37:04,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-20 14:37:04,910 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:37:04,910 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:37:05,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:37:05,115 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:37:05,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:37:05,116 INFO L82 PathProgramCache]: Analyzing trace with hash -811144676, now seen corresponding path program 3 times [2020-07-20 14:37:05,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:37:05,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868741127] [2020-07-20 14:37:05,118 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:37:05,439 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:37:05,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:37:05,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 87 conjunts are in the unsatisfiable core [2020-07-20 14:37:05,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:37:05,923 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 24 proven. 156 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-07-20 14:37:05,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:37:05,998 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:37:10,368 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:37:18,722 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:37:31,165 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:37:47,721 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:38:08,481 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:38:33,154 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:39:04,102 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 14:39:04,125 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:39:39,218 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 14:39:39,229 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:40:16,421 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:40:57,685 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:41:45,163 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:42:34,568 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:43:28,716 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 14:43:28,743 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 24 proven. 0 refuted. 156 times theorem prover too weak. 264 trivial. 0 not checked. [2020-07-20 14:43:28,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868741127] [2020-07-20 14:43:28,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:43:28,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 32 [2020-07-20 14:43:28,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940416860] [2020-07-20 14:43:28,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-07-20 14:43:28,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:43:28,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-07-20 14:43:28,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=552, Unknown=183, NotChecked=0, Total=992 [2020-07-20 14:43:28,748 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 32 states. [2020-07-20 14:43:32,826 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_main_~i~0 2)) (.cse0 (* c_main_~i~0 3))) (and (= (mod (+ .cse0 15) 4294967296) (mod (+ c_main_~k~0 15) 4294967296)) (= (mod c_main_~k~0 4294967296) (mod .cse0 4294967296)) (= (mod (+ .cse0 33) 4294967296) (mod (+ c_main_~k~0 33) 4294967296)) (= (mod (+ c_main_~k~0 6) 4294967296) (mod (+ .cse0 6) 4294967296)) (= (mod (+ .cse1 14) 4294967296) (mod (+ c_main_~j~0 14) 4294967296)) (= (mod (+ c_main_~k~0 3) 4294967296) (mod (+ .cse0 3) 4294967296)) (= (mod (+ .cse0 27) 4294967296) (mod (+ c_main_~k~0 27) 4294967296)) (= (mod (+ c_main_~j~0 12) 4294967296) (mod (+ .cse1 12) 4294967296)) (= (mod c_main_~j~0 4294967296) (mod .cse1 4294967296)) (= (mod (+ .cse1 2) 4294967296) (mod (+ c_main_~j~0 2) 4294967296)) (= (mod (+ .cse0 21) 4294967296) (mod (+ c_main_~k~0 21) 4294967296)) (= (mod (+ c_main_~j~0 16) 4294967296) (mod (+ .cse1 16) 4294967296)) (= (mod (+ .cse0 39) 4294967296) (mod (+ c_main_~k~0 39) 4294967296)) (= (mod (+ .cse1 6) 4294967296) (mod (+ c_main_~j~0 6) 4294967296)) (= (mod (+ c_main_~j~0 10) 4294967296) (mod (+ .cse1 10) 4294967296)) (= (mod (+ c_main_~k~0 9) 4294967296) (mod (+ .cse0 9) 4294967296)) (= (mod (+ .cse1 18) 4294967296) (mod (+ c_main_~j~0 18) 4294967296)) (= (mod (+ .cse1 20) 4294967296) (mod (+ c_main_~j~0 20) 4294967296)) (= (mod (+ c_main_~k~0 30) 4294967296) (mod (+ .cse0 30) 4294967296)) (= (mod (+ .cse1 26) 4294967296) (mod (+ c_main_~j~0 26) 4294967296)) (= (mod (+ .cse0 36) 4294967296) (mod (+ c_main_~k~0 36) 4294967296)) (= (mod (+ c_main_~j~0 24) 4294967296) (mod (+ .cse1 24) 4294967296)) (= (mod (+ .cse1 8) 4294967296) (mod (+ c_main_~j~0 8) 4294967296)) (= (mod (+ .cse0 12) 4294967296) (mod (+ c_main_~k~0 12) 4294967296)) (= (mod (+ .cse0 18) 4294967296) (mod (+ c_main_~k~0 18) 4294967296)) (= (mod (+ .cse1 4) 4294967296) (mod (+ c_main_~j~0 4) 4294967296)) (= (mod (+ c_main_~j~0 22) 4294967296) (mod (+ .cse1 22) 4294967296)) (= (mod (+ c_main_~k~0 24) 4294967296) (mod (+ .cse0 24) 4294967296)))) is different from false