/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/jain_6-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:56:20,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:56:20,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:56:20,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:56:20,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:56:20,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:56:20,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:56:20,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:56:20,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:56:20,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:56:20,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:56:20,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:56:20,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:56:20,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:56:20,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:56:20,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:56:20,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:56:20,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:56:20,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:56:20,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:56:20,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:56:20,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:56:20,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:56:20,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:56:20,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 17:56:20,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 17:56:20,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 17:56:20,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 17:56:20,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 17:56:20,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 17:56:20,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 17:56:20,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 17:56:20,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 17:56:20,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 17:56:20,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 17:56:20,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 17:56:20,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 17:56:20,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 17:56:20,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:56:20,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:56:20,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:56:20,655 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 [2020-10-23 17:56:20,683 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:56:20,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:56:20,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:56:20,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:56:20,685 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:56:20,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:56:20,686 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:56:20,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:56:20,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:56:20,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:56:20,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:56:20,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:56:20,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:56:20,687 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:56:20,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:56:20,687 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:56:20,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:56:20,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:56:20,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:56:20,688 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:56:20,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:56:20,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:56:20,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:56:20,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:56:20,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:56:20,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:56:20,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:56:20,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:56:20,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:56:20,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:56:21,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:56:21,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:56:21,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:56:21,131 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:56:21,132 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:56:21,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_6-1.c [2020-10-23 17:56:21,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92530f413/4c9a85e7e6ec42a2b4a77280bc13ae62/FLAG331bd06a4 [2020-10-23 17:56:21,929 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:56:21,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_6-1.c [2020-10-23 17:56:21,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92530f413/4c9a85e7e6ec42a2b4a77280bc13ae62/FLAG331bd06a4 [2020-10-23 17:56:22,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92530f413/4c9a85e7e6ec42a2b4a77280bc13ae62 [2020-10-23 17:56:22,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:56:22,315 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:56:22,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:56:22,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:56:22,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:56:22,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:22" (1/1) ... [2020-10-23 17:56:22,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4047da06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:22, skipping insertion in model container [2020-10-23 17:56:22,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:22" (1/1) ... [2020-10-23 17:56:22,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:56:22,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:56:22,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:56:22,542 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:56:22,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:56:22,578 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:56:22,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:22 WrapperNode [2020-10-23 17:56:22,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:56:22,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:56:22,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:56:22,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:56:22,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:22" (1/1) ... [2020-10-23 17:56:22,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:22" (1/1) ... [2020-10-23 17:56:22,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:22" (1/1) ... [2020-10-23 17:56:22,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:22" (1/1) ... [2020-10-23 17:56:22,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:22" (1/1) ... [2020-10-23 17:56:22,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:22" (1/1) ... [2020-10-23 17:56:22,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:22" (1/1) ... [2020-10-23 17:56:22,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:56:22,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:56:22,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:56:22,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:56:22,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:22" (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 [2020-10-23 17:56:22,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:56:22,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:56:22,738 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:56:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 17:56:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:56:22,739 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:56:22,739 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:56:22,740 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:56:22,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:56:22,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-23 17:56:22,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 17:56:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:56:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:56:22,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:56:22,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:56:22,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:56:22,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:56:22,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:56:23,045 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:56:23,046 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 17:56:23,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:23 BoogieIcfgContainer [2020-10-23 17:56:23,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:56:23,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:56:23,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:56:23,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:56:23,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:56:22" (1/3) ... [2020-10-23 17:56:23,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b5ccf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:23, skipping insertion in model container [2020-10-23 17:56:23,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:22" (2/3) ... [2020-10-23 17:56:23,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b5ccf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:23, skipping insertion in model container [2020-10-23 17:56:23,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:23" (3/3) ... [2020-10-23 17:56:23,058 INFO L111 eAbstractionObserver]: Analyzing ICFG jain_6-1.c [2020-10-23 17:56:23,072 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:56:23,078 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:56:23,093 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:56:23,124 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:56:23,124 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:56:23,125 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:56:23,125 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:56:23,125 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:56:23,125 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:56:23,125 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:56:23,126 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:56:23,147 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-23 17:56:23,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-23 17:56:23,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:23,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:56:23,156 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:23,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:23,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1199457490, now seen corresponding path program 1 times [2020-10-23 17:56:23,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:23,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090992709] [2020-10-23 17:56:23,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:23,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:56:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:23,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:23,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090992709] [2020-10-23 17:56:23,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:56:23,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 17:56:23,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63075615] [2020-10-23 17:56:23,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 17:56:23,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:23,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 17:56:23,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-23 17:56:23,822 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 7 states. [2020-10-23 17:56:24,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:24,386 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2020-10-23 17:56:24,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 17:56:24,388 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-10-23 17:56:24,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:24,397 INFO L225 Difference]: With dead ends: 39 [2020-10-23 17:56:24,397 INFO L226 Difference]: Without dead ends: 22 [2020-10-23 17:56:24,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-23 17:56:24,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-23 17:56:24,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-10-23 17:56:24,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-23 17:56:24,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-10-23 17:56:24,451 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2020-10-23 17:56:24,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:24,452 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-10-23 17:56:24,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 17:56:24,452 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-10-23 17:56:24,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-23 17:56:24,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:24,453 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:56:24,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:56:24,454 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:24,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:24,455 INFO L82 PathProgramCache]: Analyzing trace with hash -680978417, now seen corresponding path program 1 times [2020-10-23 17:56:24,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:24,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227107036] [2020-10-23 17:56:24,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:24,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:56:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:24,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 17:56:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:24,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:24,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227107036] [2020-10-23 17:56:24,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285854068] [2020-10-23 17:56:24,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true