/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/verifythis/prefixsum_iter.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:04:50,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:04:50,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:04:50,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:04:50,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:04:50,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:04:50,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:04:50,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:04:50,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:04:50,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:04:50,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:04:50,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:04:50,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:04:50,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:04:50,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:04:50,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:04:50,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:04:50,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:04:50,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:04:50,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:04:50,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:04:50,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:04:50,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:04:50,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:04:50,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:04:50,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:04:50,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:04:50,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:04:50,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:04:50,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:04:50,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:04:50,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:04:50,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:04:50,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:04:50,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:04:50,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:04:50,764 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:04:50,820 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:04:50,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:04:50,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:04:50,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:04:50,827 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:04:50,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:04:50,828 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:04:50,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:04:50,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:04:50,829 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:04:50,830 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:04:50,830 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:04:50,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:04:50,831 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:04:50,831 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:04:50,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:04:50,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:04:50,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:04:50,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:04:50,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:04:50,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:04:50,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:04:50,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:04:50,833 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:04:50,834 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:04:51,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:04:51,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:04:51,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:04:51,278 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:04:51,278 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:04:51,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/prefixsum_iter.c [2020-12-22 19:04:51,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91a6cc820/a16d2451291241fda147388d57c81da0/FLAG364198096 [2020-12-22 19:04:52,009 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:04:52,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/prefixsum_iter.c [2020-12-22 19:04:52,018 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91a6cc820/a16d2451291241fda147388d57c81da0/FLAG364198096 [2020-12-22 19:04:52,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91a6cc820/a16d2451291241fda147388d57c81da0 [2020-12-22 19:04:52,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:04:52,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:04:52,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:04:52,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:04:52,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:04:52,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:04:52" (1/1) ... [2020-12-22 19:04:52,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@703150de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:52, skipping insertion in model container [2020-12-22 19:04:52,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:04:52" (1/1) ... [2020-12-22 19:04:52,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:04:52,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:04:52,613 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/prefixsum_iter.c[526,539] [2020-12-22 19:04:52,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:04:52,683 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:04:52,696 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/prefixsum_iter.c[526,539] [2020-12-22 19:04:52,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:04:52,738 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:04:52,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:52 WrapperNode [2020-12-22 19:04:52,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:04:52,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:04:52,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:04:52,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:04:52,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:52" (1/1) ... [2020-12-22 19:04:52,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:52" (1/1) ... [2020-12-22 19:04:52,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:04:52,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:04:52,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:04:52,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:04:52,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:52" (1/1) ... [2020-12-22 19:04:52,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:52" (1/1) ... [2020-12-22 19:04:52,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:52" (1/1) ... [2020-12-22 19:04:52,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:52" (1/1) ... [2020-12-22 19:04:52,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:52" (1/1) ... [2020-12-22 19:04:52,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:52" (1/1) ... [2020-12-22 19:04:52,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:52" (1/1) ... [2020-12-22 19:04:52,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:04:52,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:04:52,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:04:52,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:04:52,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:52" (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 [2020-12-22 19:04:53,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:04:53,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:04:53,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:04:53,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 19:04:53,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:04:53,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:04:53,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:04:53,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:04:53,865 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:04:53,865 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2020-12-22 19:04:53,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:04:53 BoogieIcfgContainer [2020-12-22 19:04:53,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:04:53,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:04:53,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:04:53,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:04:53,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:04:52" (1/3) ... [2020-12-22 19:04:53,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411b4eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:04:53, skipping insertion in model container [2020-12-22 19:04:53,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:52" (2/3) ... [2020-12-22 19:04:53,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411b4eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:04:53, skipping insertion in model container [2020-12-22 19:04:53,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:04:53" (3/3) ... [2020-12-22 19:04:53,877 INFO L111 eAbstractionObserver]: Analyzing ICFG prefixsum_iter.c [2020-12-22 19:04:53,884 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:04:53,891 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 34 error locations. [2020-12-22 19:04:53,915 INFO L253 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2020-12-22 19:04:53,941 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:04:53,941 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:04:53,941 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:04:53,942 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:04:53,942 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:04:53,942 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:04:53,942 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:04:53,942 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:04:53,963 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-12-22 19:04:53,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 19:04:53,971 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:53,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:53,973 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:04:53,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:53,979 INFO L82 PathProgramCache]: Analyzing trace with hash -950329357, now seen corresponding path program 1 times [2020-12-22 19:04:53,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:53,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675875324] [2020-12-22 19:04:53,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:54,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:54,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675875324] [2020-12-22 19:04:54,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:54,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:04:54,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256571173] [2020-12-22 19:04:54,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 19:04:54,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:54,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 19:04:54,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 19:04:54,209 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 2 states. [2020-12-22 19:04:54,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:54,236 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2020-12-22 19:04:54,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 19:04:54,237 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-22 19:04:54,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:54,257 INFO L225 Difference]: With dead ends: 92 [2020-12-22 19:04:54,257 INFO L226 Difference]: Without dead ends: 90 [2020-12-22 19:04:54,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 19:04:54,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-22 19:04:54,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-12-22 19:04:54,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-22 19:04:54,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2020-12-22 19:04:54,306 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 13 [2020-12-22 19:04:54,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:54,307 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2020-12-22 19:04:54,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 19:04:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2020-12-22 19:04:54,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 19:04:54,308 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:54,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:54,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:04:54,309 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:04:54,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:54,310 INFO L82 PathProgramCache]: Analyzing trace with hash -192006477, now seen corresponding path program 1 times [2020-12-22 19:04:54,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:54,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320437961] [2020-12-22 19:04:54,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:54,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:54,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320437961] [2020-12-22 19:04:54,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:54,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:04:54,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278875634] [2020-12-22 19:04:54,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:04:54,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:54,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:04:54,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:04:54,515 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand 4 states. [2020-12-22 19:04:54,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:54,750 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2020-12-22 19:04:54,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:04:54,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-22 19:04:54,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:54,752 INFO L225 Difference]: With dead ends: 88 [2020-12-22 19:04:54,752 INFO L226 Difference]: Without dead ends: 88 [2020-12-22 19:04:54,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:04:54,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-22 19:04:54,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-12-22 19:04:54,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-22 19:04:54,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2020-12-22 19:04:54,766 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 13 [2020-12-22 19:04:54,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:54,767 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2020-12-22 19:04:54,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:04:54,768 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2020-12-22 19:04:54,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 19:04:54,769 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:54,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:54,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:04:54,770 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:04:54,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:54,774 INFO L82 PathProgramCache]: Analyzing trace with hash -192006476, now seen corresponding path program 1 times [2020-12-22 19:04:54,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:54,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617348405] [2020-12-22 19:04:54,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:55,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:55,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617348405] [2020-12-22 19:04:55,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:55,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:04:55,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256307468] [2020-12-22 19:04:55,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:04:55,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:55,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:04:55,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:04:55,072 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand 6 states. [2020-12-22 19:04:55,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:55,699 INFO L93 Difference]: Finished difference Result 162 states and 173 transitions. [2020-12-22 19:04:55,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:04:55,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-22 19:04:55,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:55,706 INFO L225 Difference]: With dead ends: 162 [2020-12-22 19:04:55,707 INFO L226 Difference]: Without dead ends: 162 [2020-12-22 19:04:55,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:04:55,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-22 19:04:55,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 89. [2020-12-22 19:04:55,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-22 19:04:55,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2020-12-22 19:04:55,735 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 13 [2020-12-22 19:04:55,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:55,735 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2020-12-22 19:04:55,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:04:55,736 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2020-12-22 19:04:55,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 19:04:55,738 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:55,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:55,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:04:55,739 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:04:55,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:55,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1657233474, now seen corresponding path program 1 times [2020-12-22 19:04:55,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:55,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866475582] [2020-12-22 19:04:55,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:55,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:55,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866475582] [2020-12-22 19:04:55,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:55,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:04:55,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077415583] [2020-12-22 19:04:55,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:04:55,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:55,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:04:55,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:04:55,839 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand 4 states. [2020-12-22 19:04:55,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:55,922 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2020-12-22 19:04:55,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:04:55,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-22 19:04:55,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:55,925 INFO L225 Difference]: With dead ends: 88 [2020-12-22 19:04:55,925 INFO L226 Difference]: Without dead ends: 88 [2020-12-22 19:04:55,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:04:55,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-22 19:04:55,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-12-22 19:04:55,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-22 19:04:55,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2020-12-22 19:04:55,941 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 14 [2020-12-22 19:04:55,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:55,941 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2020-12-22 19:04:55,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:04:55,941 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2020-12-22 19:04:55,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 19:04:55,942 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:55,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:55,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:04:55,943 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:04:55,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:55,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1657233473, now seen corresponding path program 1 times [2020-12-22 19:04:55,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:55,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011089986] [2020-12-22 19:04:55,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:56,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:56,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011089986] [2020-12-22 19:04:56,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:56,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:04:56,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610548718] [2020-12-22 19:04:56,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:04:56,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:56,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:04:56,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:04:56,011 INFO L87 Difference]: Start difference. First operand 88 states and 95 transitions. Second operand 5 states. [2020-12-22 19:04:56,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:56,224 INFO L93 Difference]: Finished difference Result 158 states and 169 transitions. [2020-12-22 19:04:56,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:04:56,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 19:04:56,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:56,227 INFO L225 Difference]: With dead ends: 158 [2020-12-22 19:04:56,227 INFO L226 Difference]: Without dead ends: 158 [2020-12-22 19:04:56,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:04:56,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-22 19:04:56,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 125. [2020-12-22 19:04:56,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-22 19:04:56,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 161 transitions. [2020-12-22 19:04:56,235 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 161 transitions. Word has length 14 [2020-12-22 19:04:56,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:56,235 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 161 transitions. [2020-12-22 19:04:56,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:04:56,235 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 161 transitions. [2020-12-22 19:04:56,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 19:04:56,236 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:56,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:56,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:04:56,237 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:04:56,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:56,237 INFO L82 PathProgramCache]: Analyzing trace with hash 830026466, now seen corresponding path program 1 times [2020-12-22 19:04:56,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:56,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316970424] [2020-12-22 19:04:56,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:56,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:56,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316970424] [2020-12-22 19:04:56,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:56,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:04:56,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49765684] [2020-12-22 19:04:56,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:04:56,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:56,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:04:56,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:04:56,308 INFO L87 Difference]: Start difference. First operand 125 states and 161 transitions. Second operand 5 states. [2020-12-22 19:04:56,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:56,377 INFO L93 Difference]: Finished difference Result 146 states and 155 transitions. [2020-12-22 19:04:56,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:04:56,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-22 19:04:56,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:56,379 INFO L225 Difference]: With dead ends: 146 [2020-12-22 19:04:56,379 INFO L226 Difference]: Without dead ends: 146 [2020-12-22 19:04:56,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:04:56,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-12-22 19:04:56,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 119. [2020-12-22 19:04:56,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-22 19:04:56,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 147 transitions. [2020-12-22 19:04:56,395 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 147 transitions. Word has length 16 [2020-12-22 19:04:56,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:56,396 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 147 transitions. [2020-12-22 19:04:56,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:04:56,396 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 147 transitions. [2020-12-22 19:04:56,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:04:56,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:56,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:56,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 19:04:56,404 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:04:56,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:56,404 INFO L82 PathProgramCache]: Analyzing trace with hash -39024960, now seen corresponding path program 1 times [2020-12-22 19:04:56,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:56,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347242485] [2020-12-22 19:04:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:56,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:56,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347242485] [2020-12-22 19:04:56,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:56,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:04:56,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729575295] [2020-12-22 19:04:56,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:04:56,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:56,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:04:56,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:04:56,595 INFO L87 Difference]: Start difference. First operand 119 states and 147 transitions. Second operand 8 states. [2020-12-22 19:04:56,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:56,809 INFO L93 Difference]: Finished difference Result 206 states and 240 transitions. [2020-12-22 19:04:56,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:04:56,810 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-12-22 19:04:56,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:56,811 INFO L225 Difference]: With dead ends: 206 [2020-12-22 19:04:56,811 INFO L226 Difference]: Without dead ends: 206 [2020-12-22 19:04:56,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:04:56,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-12-22 19:04:56,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 127. [2020-12-22 19:04:56,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-22 19:04:56,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 156 transitions. [2020-12-22 19:04:56,818 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 156 transitions. Word has length 17 [2020-12-22 19:04:56,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:56,818 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 156 transitions. [2020-12-22 19:04:56,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:04:56,819 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 156 transitions. [2020-12-22 19:04:56,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:04:56,819 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:56,819 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:56,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:04:56,820 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:04:56,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:56,821 INFO L82 PathProgramCache]: Analyzing trace with hash 206568546, now seen corresponding path program 1 times [2020-12-22 19:04:56,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:56,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146413458] [2020-12-22 19:04:56,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:56,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:56,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146413458] [2020-12-22 19:04:56,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462549002] [2020-12-22 19:04:56,947 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 [2020-12-22 19:04:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:57,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 19:04:57,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:57,167 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-22 19:04:57,168 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:57,175 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:57,177 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:57,177 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2020-12-22 19:04:57,226 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:57,227 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 34 [2020-12-22 19:04:57,234 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:57,263 INFO L625 ElimStorePlain]: treesize reduction 16, result has 52.9 percent of original size [2020-12-22 19:04:57,265 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:57,265 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:18 [2020-12-22 19:04:57,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:57,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:57,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-22 19:04:57,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908157679] [2020-12-22 19:04:57,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 19:04:57,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:57,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 19:04:57,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:04:57,401 INFO L87 Difference]: Start difference. First operand 127 states and 156 transitions. Second operand 11 states. [2020-12-22 19:04:57,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:57,901 INFO L93 Difference]: Finished difference Result 153 states and 163 transitions. [2020-12-22 19:04:57,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:04:57,902 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-12-22 19:04:57,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:57,903 INFO L225 Difference]: With dead ends: 153 [2020-12-22 19:04:57,903 INFO L226 Difference]: Without dead ends: 153 [2020-12-22 19:04:57,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:04:57,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-12-22 19:04:57,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 126. [2020-12-22 19:04:57,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-12-22 19:04:57,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 155 transitions. [2020-12-22 19:04:57,908 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 155 transitions. Word has length 18 [2020-12-22 19:04:57,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:57,908 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 155 transitions. [2020-12-22 19:04:57,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 19:04:57,909 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 155 transitions. [2020-12-22 19:04:57,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:04:57,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:57,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:58,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-22 19:04:58,123 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:04:58,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:58,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1267399976, now seen corresponding path program 1 times [2020-12-22 19:04:58,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:58,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876303611] [2020-12-22 19:04:58,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:58,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:58,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876303611] [2020-12-22 19:04:58,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890340272] [2020-12-22 19:04:58,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:58,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 19:04:58,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:58,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:58,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:58,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-12-22 19:04:58,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790203272] [2020-12-22 19:04:58,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:04:58,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:58,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:04:58,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:04:58,513 INFO L87 Difference]: Start difference. First operand 126 states and 155 transitions. Second operand 9 states. [2020-12-22 19:04:58,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:58,802 INFO L93 Difference]: Finished difference Result 174 states and 186 transitions. [2020-12-22 19:04:58,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:04:58,803 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-12-22 19:04:58,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:58,804 INFO L225 Difference]: With dead ends: 174 [2020-12-22 19:04:58,804 INFO L226 Difference]: Without dead ends: 174 [2020-12-22 19:04:58,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:04:58,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-12-22 19:04:58,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 88. [2020-12-22 19:04:58,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-22 19:04:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2020-12-22 19:04:58,808 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 18 [2020-12-22 19:04:58,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:58,808 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2020-12-22 19:04:58,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:04:58,808 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2020-12-22 19:04:58,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 19:04:58,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:58,809 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:59,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:59,026 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:04:59,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:59,027 INFO L82 PathProgramCache]: Analyzing trace with hash 2108657617, now seen corresponding path program 1 times [2020-12-22 19:04:59,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:59,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426098761] [2020-12-22 19:04:59,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:59,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:59,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426098761] [2020-12-22 19:04:59,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354075596] [2020-12-22 19:04:59,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:59,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 19:04:59,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:59,253 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-22 19:04:59,254 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:59,259 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:59,260 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:59,261 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2020-12-22 19:04:59,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:59,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:59,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-12-22 19:04:59,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788625557] [2020-12-22 19:04:59,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:04:59,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:59,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:04:59,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:04:59,348 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand 8 states. [2020-12-22 19:04:59,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:59,595 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2020-12-22 19:04:59,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:04:59,596 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-12-22 19:04:59,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:59,599 INFO L225 Difference]: With dead ends: 88 [2020-12-22 19:04:59,599 INFO L226 Difference]: Without dead ends: 88 [2020-12-22 19:04:59,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:04:59,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-22 19:04:59,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-12-22 19:04:59,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 19:04:59,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2020-12-22 19:04:59,602 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 19 [2020-12-22 19:04:59,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:59,604 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2020-12-22 19:04:59,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:04:59,604 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2020-12-22 19:04:59,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:04:59,606 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:59,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:59,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 19:04:59,822 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:04:59,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:59,823 INFO L82 PathProgramCache]: Analyzing trace with hash -806066572, now seen corresponding path program 1 times [2020-12-22 19:04:59,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:59,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731565046] [2020-12-22 19:04:59,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:59,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:59,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731565046] [2020-12-22 19:04:59,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:59,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:04:59,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831435633] [2020-12-22 19:04:59,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:04:59,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:59,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:04:59,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:04:59,868 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand 4 states. [2020-12-22 19:04:59,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:59,945 INFO L93 Difference]: Finished difference Result 82 states and 88 transitions. [2020-12-22 19:04:59,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:04:59,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-12-22 19:04:59,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:59,946 INFO L225 Difference]: With dead ends: 82 [2020-12-22 19:04:59,946 INFO L226 Difference]: Without dead ends: 82 [2020-12-22 19:04:59,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:04:59,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-22 19:04:59,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-12-22 19:04:59,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-22 19:04:59,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2020-12-22 19:04:59,950 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 21 [2020-12-22 19:04:59,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:59,950 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2020-12-22 19:04:59,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:04:59,950 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2020-12-22 19:04:59,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:04:59,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:59,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:59,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 19:04:59,951 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:04:59,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:59,952 INFO L82 PathProgramCache]: Analyzing trace with hash -806066571, now seen corresponding path program 1 times [2020-12-22 19:04:59,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:59,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638565598] [2020-12-22 19:04:59,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:05:00,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638565598] [2020-12-22 19:05:00,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663963671] [2020-12-22 19:05:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:00,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:05:00,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:00,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:05:00,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:00,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-12-22 19:05:00,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106083540] [2020-12-22 19:05:00,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:05:00,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:00,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:05:00,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:05:00,136 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 8 states. [2020-12-22 19:05:00,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:00,206 INFO L93 Difference]: Finished difference Result 145 states and 154 transitions. [2020-12-22 19:05:00,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:05:00,206 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-12-22 19:05:00,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:00,208 INFO L225 Difference]: With dead ends: 145 [2020-12-22 19:05:00,208 INFO L226 Difference]: Without dead ends: 145 [2020-12-22 19:05:00,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:05:00,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-22 19:05:00,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 88. [2020-12-22 19:05:00,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-22 19:05:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2020-12-22 19:05:00,211 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 21 [2020-12-22 19:05:00,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:00,211 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2020-12-22 19:05:00,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:05:00,211 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2020-12-22 19:05:00,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:05:00,212 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:00,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:00,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:00,413 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:00,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:00,414 INFO L82 PathProgramCache]: Analyzing trace with hash 781698414, now seen corresponding path program 1 times [2020-12-22 19:05:00,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:00,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847861628] [2020-12-22 19:05:00,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:00,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:05:00,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847861628] [2020-12-22 19:05:00,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292361533] [2020-12-22 19:05:00,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:00,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 19:05:00,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:00,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:05:00,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:00,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-12-22 19:05:00,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716392974] [2020-12-22 19:05:00,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 19:05:00,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:00,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 19:05:00,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:05:00,837 INFO L87 Difference]: Start difference. First operand 88 states and 95 transitions. Second operand 18 states. [2020-12-22 19:05:01,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:01,293 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2020-12-22 19:05:01,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 19:05:01,294 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22 [2020-12-22 19:05:01,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:01,298 INFO L225 Difference]: With dead ends: 87 [2020-12-22 19:05:01,298 INFO L226 Difference]: Without dead ends: 87 [2020-12-22 19:05:01,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-12-22 19:05:01,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-22 19:05:01,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-12-22 19:05:01,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-22 19:05:01,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2020-12-22 19:05:01,301 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 22 [2020-12-22 19:05:01,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:01,301 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2020-12-22 19:05:01,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 19:05:01,302 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2020-12-22 19:05:01,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:05:01,305 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:01,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:01,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 19:05:01,521 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:01,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:01,522 INFO L82 PathProgramCache]: Analyzing trace with hash 781698413, now seen corresponding path program 1 times [2020-12-22 19:05:01,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:01,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474723176] [2020-12-22 19:05:01,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:01,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:05:01,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474723176] [2020-12-22 19:05:01,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:05:01,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:05:01,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010903115] [2020-12-22 19:05:01,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:05:01,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:01,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:05:01,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:05:01,567 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand 4 states. [2020-12-22 19:05:01,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:01,663 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2020-12-22 19:05:01,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:05:01,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-12-22 19:05:01,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:01,664 INFO L225 Difference]: With dead ends: 81 [2020-12-22 19:05:01,664 INFO L226 Difference]: Without dead ends: 81 [2020-12-22 19:05:01,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:05:01,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-22 19:05:01,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-12-22 19:05:01,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-22 19:05:01,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2020-12-22 19:05:01,668 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 22 [2020-12-22 19:05:01,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:01,668 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2020-12-22 19:05:01,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:05:01,668 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2020-12-22 19:05:01,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:05:01,672 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:01,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:01,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 19:05:01,672 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:01,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:01,674 INFO L82 PathProgramCache]: Analyzing trace with hash -380837929, now seen corresponding path program 1 times [2020-12-22 19:05:01,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:01,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206560927] [2020-12-22 19:05:01,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:01,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:05:01,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206560927] [2020-12-22 19:05:01,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261047887] [2020-12-22 19:05:01,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:01,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:05:01,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:01,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:05:01,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:01,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-12-22 19:05:01,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761020375] [2020-12-22 19:05:01,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:05:01,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:01,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:05:01,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:05:01,938 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 9 states. [2020-12-22 19:05:02,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:02,055 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2020-12-22 19:05:02,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:05:02,056 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-12-22 19:05:02,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:02,057 INFO L225 Difference]: With dead ends: 172 [2020-12-22 19:05:02,058 INFO L226 Difference]: Without dead ends: 172 [2020-12-22 19:05:02,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:05:02,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-12-22 19:05:02,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 88. [2020-12-22 19:05:02,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-22 19:05:02,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2020-12-22 19:05:02,061 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 26 [2020-12-22 19:05:02,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:02,061 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2020-12-22 19:05:02,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:05:02,062 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2020-12-22 19:05:02,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:05:02,062 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:02,062 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:02,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:02,276 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:02,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:02,277 INFO L82 PathProgramCache]: Analyzing trace with hash 111451683, now seen corresponding path program 2 times [2020-12-22 19:05:02,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:02,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030546696] [2020-12-22 19:05:02,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:05:02,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030546696] [2020-12-22 19:05:02,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077956466] [2020-12-22 19:05:02,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:02,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:05:02,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:05:02,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 19:05:02,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:02,480 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-22 19:05:02,483 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:05:02,488 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:05:02,489 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:05:02,489 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2020-12-22 19:05:02,527 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:05:02,528 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 34 [2020-12-22 19:05:02,531 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:05:02,550 INFO L625 ElimStorePlain]: treesize reduction 16, result has 52.9 percent of original size [2020-12-22 19:05:02,551 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:05:02,552 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:18 [2020-12-22 19:05:02,674 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 19:05:02,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:05:02,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2020-12-22 19:05:02,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811564041] [2020-12-22 19:05:02,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:05:02,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:02,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:05:02,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:05:02,676 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand 6 states. [2020-12-22 19:05:02,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:03,000 INFO L93 Difference]: Finished difference Result 143 states and 155 transitions. [2020-12-22 19:05:03,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:05:03,000 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-12-22 19:05:03,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:03,002 INFO L225 Difference]: With dead ends: 143 [2020-12-22 19:05:03,002 INFO L226 Difference]: Without dead ends: 143 [2020-12-22 19:05:03,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:05:03,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-12-22 19:05:03,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 90. [2020-12-22 19:05:03,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-22 19:05:03,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2020-12-22 19:05:03,005 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 26 [2020-12-22 19:05:03,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:03,006 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2020-12-22 19:05:03,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:05:03,006 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2020-12-22 19:05:03,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:05:03,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:03,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:03,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 19:05:03,218 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:03,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:03,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1078892604, now seen corresponding path program 1 times [2020-12-22 19:05:03,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:03,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989157660] [2020-12-22 19:05:03,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:03,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:05:03,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989157660] [2020-12-22 19:05:03,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:05:03,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:05:03,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849008929] [2020-12-22 19:05:03,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:05:03,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:03,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:05:03,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:05:03,256 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 4 states. [2020-12-22 19:05:03,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:03,316 INFO L93 Difference]: Finished difference Result 89 states and 98 transitions. [2020-12-22 19:05:03,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:05:03,317 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-12-22 19:05:03,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:03,318 INFO L225 Difference]: With dead ends: 89 [2020-12-22 19:05:03,318 INFO L226 Difference]: Without dead ends: 89 [2020-12-22 19:05:03,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:05:03,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-22 19:05:03,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-12-22 19:05:03,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-22 19:05:03,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2020-12-22 19:05:03,321 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 27 [2020-12-22 19:05:03,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:03,321 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2020-12-22 19:05:03,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:05:03,321 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2020-12-22 19:05:03,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:05:03,321 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:03,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:03,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 19:05:03,322 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:03,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:03,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1078892605, now seen corresponding path program 1 times [2020-12-22 19:05:03,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:03,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683329938] [2020-12-22 19:05:03,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:03,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:05:03,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683329938] [2020-12-22 19:05:03,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:05:03,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:05:03,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469187180] [2020-12-22 19:05:03,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:05:03,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:03,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:05:03,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:05:03,402 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 7 states. [2020-12-22 19:05:03,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:03,560 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2020-12-22 19:05:03,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:05:03,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-12-22 19:05:03,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:03,562 INFO L225 Difference]: With dead ends: 112 [2020-12-22 19:05:03,562 INFO L226 Difference]: Without dead ends: 112 [2020-12-22 19:05:03,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:05:03,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-22 19:05:03,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 91. [2020-12-22 19:05:03,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-22 19:05:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2020-12-22 19:05:03,566 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 27 [2020-12-22 19:05:03,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:03,566 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2020-12-22 19:05:03,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:05:03,566 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2020-12-22 19:05:03,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:05:03,566 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:03,567 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:03,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 19:05:03,567 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:03,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:03,567 INFO L82 PathProgramCache]: Analyzing trace with hash -839965106, now seen corresponding path program 1 times [2020-12-22 19:05:03,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:03,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149145906] [2020-12-22 19:05:03,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:05:03,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149145906] [2020-12-22 19:05:03,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460236141] [2020-12-22 19:05:03,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:03,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 19:05:03,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:03,960 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:05:03,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:03,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-12-22 19:05:03,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167585253] [2020-12-22 19:05:03,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 19:05:03,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:03,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 19:05:03,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:05:03,962 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand 18 states. [2020-12-22 19:05:04,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:04,832 INFO L93 Difference]: Finished difference Result 234 states and 257 transitions. [2020-12-22 19:05:04,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 19:05:04,832 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 27 [2020-12-22 19:05:04,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:04,834 INFO L225 Difference]: With dead ends: 234 [2020-12-22 19:05:04,834 INFO L226 Difference]: Without dead ends: 234 [2020-12-22 19:05:04,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2020-12-22 19:05:04,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-12-22 19:05:04,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 96. [2020-12-22 19:05:04,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-22 19:05:04,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 108 transitions. [2020-12-22 19:05:04,838 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 108 transitions. Word has length 27 [2020-12-22 19:05:04,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:04,838 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 108 transitions. [2020-12-22 19:05:04,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 19:05:04,838 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 108 transitions. [2020-12-22 19:05:04,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 19:05:04,839 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:04,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:05,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:05,053 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:05,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:05,054 INFO L82 PathProgramCache]: Analyzing trace with hash -914068711, now seen corresponding path program 1 times [2020-12-22 19:05:05,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:05,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331834102] [2020-12-22 19:05:05,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:05,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:05:05,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331834102] [2020-12-22 19:05:05,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:05:05,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 19:05:05,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870685637] [2020-12-22 19:05:05,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:05:05,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:05,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:05:05,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:05:05,162 INFO L87 Difference]: Start difference. First operand 96 states and 108 transitions. Second operand 7 states. [2020-12-22 19:05:05,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:05,298 INFO L93 Difference]: Finished difference Result 106 states and 117 transitions. [2020-12-22 19:05:05,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:05:05,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-12-22 19:05:05,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:05,299 INFO L225 Difference]: With dead ends: 106 [2020-12-22 19:05:05,300 INFO L226 Difference]: Without dead ends: 106 [2020-12-22 19:05:05,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:05:05,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-22 19:05:05,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 96. [2020-12-22 19:05:05,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-22 19:05:05,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2020-12-22 19:05:05,303 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 28 [2020-12-22 19:05:05,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:05,303 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2020-12-22 19:05:05,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:05:05,303 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2020-12-22 19:05:05,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 19:05:05,304 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:05,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:05,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 19:05:05,304 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:05,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:05,305 INFO L82 PathProgramCache]: Analyzing trace with hash 2049411038, now seen corresponding path program 1 times [2020-12-22 19:05:05,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:05,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840928884] [2020-12-22 19:05:05,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:05:05,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840928884] [2020-12-22 19:05:05,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:05:05,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 19:05:05,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288330743] [2020-12-22 19:05:05,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:05:05,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:05,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:05:05,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:05:05,431 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand 9 states. [2020-12-22 19:05:05,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:05,862 INFO L93 Difference]: Finished difference Result 155 states and 170 transitions. [2020-12-22 19:05:05,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 19:05:05,863 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-12-22 19:05:05,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:05,864 INFO L225 Difference]: With dead ends: 155 [2020-12-22 19:05:05,864 INFO L226 Difference]: Without dead ends: 155 [2020-12-22 19:05:05,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:05:05,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-12-22 19:05:05,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 111. [2020-12-22 19:05:05,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-22 19:05:05,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2020-12-22 19:05:05,868 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 30 [2020-12-22 19:05:05,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:05,868 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2020-12-22 19:05:05,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:05:05,868 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2020-12-22 19:05:05,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 19:05:05,869 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:05,869 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:05,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 19:05:05,869 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:05,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:05,869 INFO L82 PathProgramCache]: Analyzing trace with hash -966633218, now seen corresponding path program 1 times [2020-12-22 19:05:05,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:05,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648089209] [2020-12-22 19:05:05,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:05:05,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648089209] [2020-12-22 19:05:05,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746729094] [2020-12-22 19:05:05,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:06,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:05:06,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:06,087 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:05:06,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:06,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-12-22 19:05:06,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962222354] [2020-12-22 19:05:06,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:05:06,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:06,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:05:06,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:05:06,089 INFO L87 Difference]: Start difference. First operand 111 states and 126 transitions. Second operand 10 states. [2020-12-22 19:05:06,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:06,268 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2020-12-22 19:05:06,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:05:06,269 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-12-22 19:05:06,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:06,269 INFO L225 Difference]: With dead ends: 135 [2020-12-22 19:05:06,270 INFO L226 Difference]: Without dead ends: 135 [2020-12-22 19:05:06,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:05:06,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-22 19:05:06,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 101. [2020-12-22 19:05:06,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-22 19:05:06,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2020-12-22 19:05:06,273 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 30 [2020-12-22 19:05:06,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:06,273 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2020-12-22 19:05:06,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:05:06,274 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2020-12-22 19:05:06,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 19:05:06,274 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:06,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:06,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:06,489 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:06,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:06,490 INFO L82 PathProgramCache]: Analyzing trace with hash -892763100, now seen corresponding path program 1 times [2020-12-22 19:05:06,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:06,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432896004] [2020-12-22 19:05:06,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:06,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:05:06,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432896004] [2020-12-22 19:05:06,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:05:06,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:05:06,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274452840] [2020-12-22 19:05:06,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:05:06,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:06,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:05:06,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:05:06,544 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand 5 states. [2020-12-22 19:05:06,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:06,617 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2020-12-22 19:05:06,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:05:06,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-12-22 19:05:06,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:06,619 INFO L225 Difference]: With dead ends: 100 [2020-12-22 19:05:06,619 INFO L226 Difference]: Without dead ends: 100 [2020-12-22 19:05:06,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:05:06,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-12-22 19:05:06,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-12-22 19:05:06,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 19:05:06,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions. [2020-12-22 19:05:06,622 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 31 [2020-12-22 19:05:06,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:06,622 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 109 transitions. [2020-12-22 19:05:06,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:05:06,622 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 109 transitions. [2020-12-22 19:05:06,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 19:05:06,623 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:06,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:06,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 19:05:06,623 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:06,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:06,624 INFO L82 PathProgramCache]: Analyzing trace with hash -892763099, now seen corresponding path program 1 times [2020-12-22 19:05:06,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:06,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467785076] [2020-12-22 19:05:06,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:06,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:05:06,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467785076] [2020-12-22 19:05:06,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125781289] [2020-12-22 19:05:06,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:06,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 19:05:06,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:06,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:05:06,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:06,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2020-12-22 19:05:06,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110385561] [2020-12-22 19:05:06,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 19:05:06,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:06,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 19:05:06,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:05:06,955 INFO L87 Difference]: Start difference. First operand 100 states and 109 transitions. Second operand 11 states. [2020-12-22 19:05:07,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:07,236 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2020-12-22 19:05:07,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:05:07,236 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-12-22 19:05:07,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:07,237 INFO L225 Difference]: With dead ends: 108 [2020-12-22 19:05:07,237 INFO L226 Difference]: Without dead ends: 108 [2020-12-22 19:05:07,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-12-22 19:05:07,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-22 19:05:07,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2020-12-22 19:05:07,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-22 19:05:07,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2020-12-22 19:05:07,241 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 31 [2020-12-22 19:05:07,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:07,241 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions. [2020-12-22 19:05:07,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 19:05:07,241 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions. [2020-12-22 19:05:07,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 19:05:07,242 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:07,242 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:07,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:07,456 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:07,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:07,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1514192562, now seen corresponding path program 1 times [2020-12-22 19:05:07,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:07,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765492611] [2020-12-22 19:05:07,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:05:07,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765492611] [2020-12-22 19:05:07,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956615906] [2020-12-22 19:05:07,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:07,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 19:05:07,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:07,772 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:05:07,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:07,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2020-12-22 19:05:07,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382500287] [2020-12-22 19:05:07,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 19:05:07,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:07,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 19:05:07,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:05:07,775 INFO L87 Difference]: Start difference. First operand 104 states and 114 transitions. Second operand 13 states. [2020-12-22 19:05:08,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:08,100 INFO L93 Difference]: Finished difference Result 256 states and 276 transitions. [2020-12-22 19:05:08,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 19:05:08,100 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-12-22 19:05:08,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:08,102 INFO L225 Difference]: With dead ends: 256 [2020-12-22 19:05:08,102 INFO L226 Difference]: Without dead ends: 256 [2020-12-22 19:05:08,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2020-12-22 19:05:08,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-12-22 19:05:08,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 123. [2020-12-22 19:05:08,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-12-22 19:05:08,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 138 transitions. [2020-12-22 19:05:08,107 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 138 transitions. Word has length 31 [2020-12-22 19:05:08,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:08,107 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 138 transitions. [2020-12-22 19:05:08,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 19:05:08,107 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 138 transitions. [2020-12-22 19:05:08,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 19:05:08,108 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:08,108 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:08,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 19:05:08,322 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:08,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:08,323 INFO L82 PathProgramCache]: Analyzing trace with hash -2069741240, now seen corresponding path program 1 times [2020-12-22 19:05:08,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:08,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779813497] [2020-12-22 19:05:08,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:05:08,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779813497] [2020-12-22 19:05:08,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081555113] [2020-12-22 19:05:08,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:08,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:05:08,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:08,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:05:08,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:08,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-12-22 19:05:08,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737440185] [2020-12-22 19:05:08,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 19:05:08,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:08,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 19:05:08,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:05:08,568 INFO L87 Difference]: Start difference. First operand 123 states and 138 transitions. Second operand 11 states. [2020-12-22 19:05:08,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:08,763 INFO L93 Difference]: Finished difference Result 139 states and 153 transitions. [2020-12-22 19:05:08,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:05:08,763 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-12-22 19:05:08,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:08,764 INFO L225 Difference]: With dead ends: 139 [2020-12-22 19:05:08,765 INFO L226 Difference]: Without dead ends: 139 [2020-12-22 19:05:08,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-12-22 19:05:08,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-12-22 19:05:08,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 128. [2020-12-22 19:05:08,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-22 19:05:08,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 143 transitions. [2020-12-22 19:05:08,769 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 143 transitions. Word has length 35 [2020-12-22 19:05:08,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:08,769 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 143 transitions. [2020-12-22 19:05:08,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 19:05:08,770 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 143 transitions. [2020-12-22 19:05:08,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 19:05:08,770 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:08,770 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:08,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-22 19:05:08,984 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:08,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:08,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1228039667, now seen corresponding path program 1 times [2020-12-22 19:05:08,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:08,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722548161] [2020-12-22 19:05:08,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:09,075 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:05:09,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722548161] [2020-12-22 19:05:09,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327774927] [2020-12-22 19:05:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:09,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 19:05:09,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:05:09,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:09,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2020-12-22 19:05:09,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223335819] [2020-12-22 19:05:09,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 19:05:09,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:09,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 19:05:09,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:05:09,252 INFO L87 Difference]: Start difference. First operand 128 states and 143 transitions. Second operand 11 states. [2020-12-22 19:05:09,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:09,480 INFO L93 Difference]: Finished difference Result 189 states and 202 transitions. [2020-12-22 19:05:09,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 19:05:09,481 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-12-22 19:05:09,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:09,483 INFO L225 Difference]: With dead ends: 189 [2020-12-22 19:05:09,483 INFO L226 Difference]: Without dead ends: 189 [2020-12-22 19:05:09,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:05:09,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-12-22 19:05:09,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 124. [2020-12-22 19:05:09,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-12-22 19:05:09,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 135 transitions. [2020-12-22 19:05:09,487 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 135 transitions. Word has length 35 [2020-12-22 19:05:09,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:09,487 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 135 transitions. [2020-12-22 19:05:09,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 19:05:09,487 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 135 transitions. [2020-12-22 19:05:09,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 19:05:09,488 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:09,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:09,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 19:05:09,703 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:09,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:09,704 INFO L82 PathProgramCache]: Analyzing trace with hash 262529902, now seen corresponding path program 1 times [2020-12-22 19:05:09,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:09,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591460281] [2020-12-22 19:05:09,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:09,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:05:09,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591460281] [2020-12-22 19:05:09,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:05:09,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:05:09,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238231197] [2020-12-22 19:05:09,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:05:09,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:09,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:05:09,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:05:09,745 INFO L87 Difference]: Start difference. First operand 124 states and 135 transitions. Second operand 4 states. [2020-12-22 19:05:09,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:09,773 INFO L93 Difference]: Finished difference Result 123 states and 134 transitions. [2020-12-22 19:05:09,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:05:09,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-12-22 19:05:09,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:09,775 INFO L225 Difference]: With dead ends: 123 [2020-12-22 19:05:09,775 INFO L226 Difference]: Without dead ends: 123 [2020-12-22 19:05:09,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:05:09,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-12-22 19:05:09,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-12-22 19:05:09,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-12-22 19:05:09,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2020-12-22 19:05:09,778 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 36 [2020-12-22 19:05:09,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:09,779 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2020-12-22 19:05:09,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:05:09,779 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2020-12-22 19:05:09,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 19:05:09,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:09,779 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:09,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 19:05:09,780 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:09,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:09,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1254733024, now seen corresponding path program 2 times [2020-12-22 19:05:09,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:09,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801653312] [2020-12-22 19:05:09,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:05:09,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801653312] [2020-12-22 19:05:09,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990856823] [2020-12-22 19:05:09,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:10,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:05:10,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:05:10,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 19:05:10,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:10,290 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 19:05:10,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:05:10,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2020-12-22 19:05:10,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554696572] [2020-12-22 19:05:10,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:05:10,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:10,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:05:10,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-12-22 19:05:10,292 INFO L87 Difference]: Start difference. First operand 123 states and 134 transitions. Second operand 9 states. [2020-12-22 19:05:10,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:10,725 INFO L93 Difference]: Finished difference Result 179 states and 192 transitions. [2020-12-22 19:05:10,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:05:10,726 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-12-22 19:05:10,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:10,727 INFO L225 Difference]: With dead ends: 179 [2020-12-22 19:05:10,727 INFO L226 Difference]: Without dead ends: 165 [2020-12-22 19:05:10,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2020-12-22 19:05:10,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-12-22 19:05:10,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 136. [2020-12-22 19:05:10,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-12-22 19:05:10,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 148 transitions. [2020-12-22 19:05:10,731 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 148 transitions. Word has length 36 [2020-12-22 19:05:10,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:10,731 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 148 transitions. [2020-12-22 19:05:10,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:05:10,731 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 148 transitions. [2020-12-22 19:05:10,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 19:05:10,732 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:10,732 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:10,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:10,947 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:10,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:10,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1778635208, now seen corresponding path program 1 times [2020-12-22 19:05:10,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:10,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273166817] [2020-12-22 19:05:10,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:11,096 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:05:11,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273166817] [2020-12-22 19:05:11,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655638447] [2020-12-22 19:05:11,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:11,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 19:05:11,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:05:11,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:11,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2020-12-22 19:05:11,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989904074] [2020-12-22 19:05:11,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-22 19:05:11,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:11,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-22 19:05:11,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2020-12-22 19:05:11,412 INFO L87 Difference]: Start difference. First operand 136 states and 148 transitions. Second operand 21 states. [2020-12-22 19:05:12,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:12,334 INFO L93 Difference]: Finished difference Result 264 states and 284 transitions. [2020-12-22 19:05:12,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 19:05:12,334 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 37 [2020-12-22 19:05:12,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:12,337 INFO L225 Difference]: With dead ends: 264 [2020-12-22 19:05:12,337 INFO L226 Difference]: Without dead ends: 264 [2020-12-22 19:05:12,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=661, Unknown=0, NotChecked=0, Total=870 [2020-12-22 19:05:12,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-12-22 19:05:12,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 137. [2020-12-22 19:05:12,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-12-22 19:05:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 149 transitions. [2020-12-22 19:05:12,342 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 149 transitions. Word has length 37 [2020-12-22 19:05:12,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:12,343 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 149 transitions. [2020-12-22 19:05:12,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-22 19:05:12,343 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 149 transitions. [2020-12-22 19:05:12,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 19:05:12,343 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:12,344 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:12,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:12,557 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:12,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:12,558 INFO L82 PathProgramCache]: Analyzing trace with hash -696883383, now seen corresponding path program 1 times [2020-12-22 19:05:12,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:12,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953840951] [2020-12-22 19:05:12,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:12,678 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:05:12,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953840951] [2020-12-22 19:05:12,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154090833] [2020-12-22 19:05:12,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:12,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 19:05:12,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:12,973 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:05:12,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:12,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 19:05:12,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006000263] [2020-12-22 19:05:12,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 19:05:12,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:12,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 19:05:12,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:05:12,975 INFO L87 Difference]: Start difference. First operand 137 states and 149 transitions. Second operand 16 states. [2020-12-22 19:05:13,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:13,386 INFO L93 Difference]: Finished difference Result 211 states and 225 transitions. [2020-12-22 19:05:13,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 19:05:13,386 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2020-12-22 19:05:13,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:13,388 INFO L225 Difference]: With dead ends: 211 [2020-12-22 19:05:13,388 INFO L226 Difference]: Without dead ends: 211 [2020-12-22 19:05:13,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2020-12-22 19:05:13,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-12-22 19:05:13,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 152. [2020-12-22 19:05:13,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-22 19:05:13,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 164 transitions. [2020-12-22 19:05:13,393 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 164 transitions. Word has length 38 [2020-12-22 19:05:13,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:13,393 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 164 transitions. [2020-12-22 19:05:13,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 19:05:13,394 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 164 transitions. [2020-12-22 19:05:13,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 19:05:13,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:13,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:13,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:13,603 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:13,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:13,604 INFO L82 PathProgramCache]: Analyzing trace with hash -106930910, now seen corresponding path program 1 times [2020-12-22 19:05:13,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:13,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493830637] [2020-12-22 19:05:13,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:05:13,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493830637] [2020-12-22 19:05:13,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:05:13,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:05:13,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108363721] [2020-12-22 19:05:13,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:05:13,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:13,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:05:13,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:05:13,644 INFO L87 Difference]: Start difference. First operand 152 states and 164 transitions. Second operand 4 states. [2020-12-22 19:05:13,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:13,669 INFO L93 Difference]: Finished difference Result 151 states and 163 transitions. [2020-12-22 19:05:13,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:05:13,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-12-22 19:05:13,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:13,671 INFO L225 Difference]: With dead ends: 151 [2020-12-22 19:05:13,671 INFO L226 Difference]: Without dead ends: 151 [2020-12-22 19:05:13,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:05:13,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-22 19:05:13,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-12-22 19:05:13,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-12-22 19:05:13,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 163 transitions. [2020-12-22 19:05:13,679 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 163 transitions. Word has length 39 [2020-12-22 19:05:13,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:13,679 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 163 transitions. [2020-12-22 19:05:13,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:05:13,679 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 163 transitions. [2020-12-22 19:05:13,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 19:05:13,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:13,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:13,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 19:05:13,681 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:13,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:13,681 INFO L82 PathProgramCache]: Analyzing trace with hash 980109298, now seen corresponding path program 1 times [2020-12-22 19:05:13,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:13,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430583493] [2020-12-22 19:05:13,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:13,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:05:13,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430583493] [2020-12-22 19:05:13,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:05:13,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:05:13,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569641216] [2020-12-22 19:05:13,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:05:13,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:13,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:05:13,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:05:13,747 INFO L87 Difference]: Start difference. First operand 151 states and 163 transitions. Second operand 7 states. [2020-12-22 19:05:13,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:13,837 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2020-12-22 19:05:13,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:05:13,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-12-22 19:05:13,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:13,838 INFO L225 Difference]: With dead ends: 150 [2020-12-22 19:05:13,838 INFO L226 Difference]: Without dead ends: 150 [2020-12-22 19:05:13,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:05:13,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-22 19:05:13,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-12-22 19:05:13,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-12-22 19:05:13,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 162 transitions. [2020-12-22 19:05:13,845 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 162 transitions. Word has length 40 [2020-12-22 19:05:13,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:13,845 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 162 transitions. [2020-12-22 19:05:13,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:05:13,845 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 162 transitions. [2020-12-22 19:05:13,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 19:05:13,846 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:13,846 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:13,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 19:05:13,846 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:13,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:13,847 INFO L82 PathProgramCache]: Analyzing trace with hash -122905792, now seen corresponding path program 1 times [2020-12-22 19:05:13,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:13,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483114017] [2020-12-22 19:05:13,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 19:05:13,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483114017] [2020-12-22 19:05:13,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:05:13,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 19:05:13,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241063220] [2020-12-22 19:05:13,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:05:13,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:13,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:05:13,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:05:13,940 INFO L87 Difference]: Start difference. First operand 150 states and 162 transitions. Second operand 8 states. [2020-12-22 19:05:14,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:14,113 INFO L93 Difference]: Finished difference Result 201 states and 217 transitions. [2020-12-22 19:05:14,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:05:14,113 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-12-22 19:05:14,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:14,115 INFO L225 Difference]: With dead ends: 201 [2020-12-22 19:05:14,116 INFO L226 Difference]: Without dead ends: 201 [2020-12-22 19:05:14,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:05:14,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-12-22 19:05:14,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 156. [2020-12-22 19:05:14,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-12-22 19:05:14,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 170 transitions. [2020-12-22 19:05:14,121 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 170 transitions. Word has length 40 [2020-12-22 19:05:14,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:14,122 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 170 transitions. [2020-12-22 19:05:14,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:05:14,122 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 170 transitions. [2020-12-22 19:05:14,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 19:05:14,122 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:14,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:14,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 19:05:14,123 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:14,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:14,123 INFO L82 PathProgramCache]: Analyzing trace with hash 318617381, now seen corresponding path program 1 times [2020-12-22 19:05:14,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:14,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857626190] [2020-12-22 19:05:14,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:14,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:05:14,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857626190] [2020-12-22 19:05:14,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:05:14,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:05:14,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835072234] [2020-12-22 19:05:14,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:05:14,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:14,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:05:14,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:05:14,290 INFO L87 Difference]: Start difference. First operand 156 states and 170 transitions. Second operand 7 states. [2020-12-22 19:05:14,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:14,464 INFO L93 Difference]: Finished difference Result 155 states and 169 transitions. [2020-12-22 19:05:14,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:05:14,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-12-22 19:05:14,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:14,465 INFO L225 Difference]: With dead ends: 155 [2020-12-22 19:05:14,465 INFO L226 Difference]: Without dead ends: 117 [2020-12-22 19:05:14,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:05:14,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-22 19:05:14,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-12-22 19:05:14,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-12-22 19:05:14,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 129 transitions. [2020-12-22 19:05:14,470 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 129 transitions. Word has length 41 [2020-12-22 19:05:14,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:14,470 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 129 transitions. [2020-12-22 19:05:14,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:05:14,471 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 129 transitions. [2020-12-22 19:05:14,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 19:05:14,471 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:14,471 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:14,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 19:05:14,472 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:14,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:14,472 INFO L82 PathProgramCache]: Analyzing trace with hash 2146620033, now seen corresponding path program 1 times [2020-12-22 19:05:14,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:14,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400805170] [2020-12-22 19:05:14,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:14,560 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 19:05:14,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400805170] [2020-12-22 19:05:14,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:05:14,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 19:05:14,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430828457] [2020-12-22 19:05:14,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:05:14,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:14,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:05:14,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:05:14,561 INFO L87 Difference]: Start difference. First operand 117 states and 129 transitions. Second operand 8 states. [2020-12-22 19:05:14,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:14,831 INFO L93 Difference]: Finished difference Result 158 states and 174 transitions. [2020-12-22 19:05:14,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:05:14,831 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-12-22 19:05:14,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:14,832 INFO L225 Difference]: With dead ends: 158 [2020-12-22 19:05:14,833 INFO L226 Difference]: Without dead ends: 158 [2020-12-22 19:05:14,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:05:14,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-22 19:05:14,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 115. [2020-12-22 19:05:14,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-22 19:05:14,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2020-12-22 19:05:14,837 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 42 [2020-12-22 19:05:14,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:14,837 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2020-12-22 19:05:14,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:05:14,837 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2020-12-22 19:05:14,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 19:05:14,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:14,838 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:14,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 19:05:14,838 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:14,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:14,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1575038521, now seen corresponding path program 2 times [2020-12-22 19:05:14,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:14,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63062062] [2020-12-22 19:05:14,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:15,021 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:05:15,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63062062] [2020-12-22 19:05:15,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476161629] [2020-12-22 19:05:15,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:15,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:05:15,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:05:15,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 19:05:15,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:15,370 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:05:15,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:15,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2020-12-22 19:05:15,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450796338] [2020-12-22 19:05:15,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 19:05:15,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:15,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 19:05:15,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2020-12-22 19:05:15,372 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand 23 states. [2020-12-22 19:05:16,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:16,864 INFO L93 Difference]: Finished difference Result 267 states and 297 transitions. [2020-12-22 19:05:16,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 19:05:16,865 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 43 [2020-12-22 19:05:16,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:16,866 INFO L225 Difference]: With dead ends: 267 [2020-12-22 19:05:16,866 INFO L226 Difference]: Without dead ends: 267 [2020-12-22 19:05:16,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 19:05:16,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-12-22 19:05:16,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 119. [2020-12-22 19:05:16,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-22 19:05:16,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 131 transitions. [2020-12-22 19:05:16,875 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 131 transitions. Word has length 43 [2020-12-22 19:05:16,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:16,875 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 131 transitions. [2020-12-22 19:05:16,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 19:05:16,875 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 131 transitions. [2020-12-22 19:05:16,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 19:05:16,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:16,876 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:17,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-22 19:05:17,088 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:17,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:17,089 INFO L82 PathProgramCache]: Analyzing trace with hash 318334663, now seen corresponding path program 1 times [2020-12-22 19:05:17,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:17,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390820085] [2020-12-22 19:05:17,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:17,179 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:05:17,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390820085] [2020-12-22 19:05:17,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558987529] [2020-12-22 19:05:17,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:17,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:05:17,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:17,345 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 19:05:17,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:05:17,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 11 [2020-12-22 19:05:17,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090315936] [2020-12-22 19:05:17,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:05:17,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:17,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:05:17,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:05:17,347 INFO L87 Difference]: Start difference. First operand 119 states and 131 transitions. Second operand 7 states. [2020-12-22 19:05:17,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:17,423 INFO L93 Difference]: Finished difference Result 129 states and 142 transitions. [2020-12-22 19:05:17,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:05:17,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-12-22 19:05:17,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:17,424 INFO L225 Difference]: With dead ends: 129 [2020-12-22 19:05:17,424 INFO L226 Difference]: Without dead ends: 129 [2020-12-22 19:05:17,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:05:17,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-12-22 19:05:17,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 120. [2020-12-22 19:05:17,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-12-22 19:05:17,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2020-12-22 19:05:17,427 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 44 [2020-12-22 19:05:17,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:17,427 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2020-12-22 19:05:17,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:05:17,428 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2020-12-22 19:05:17,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 19:05:17,428 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:17,428 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:17,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-12-22 19:05:17,642 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:17,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:17,643 INFO L82 PathProgramCache]: Analyzing trace with hash 499502821, now seen corresponding path program 1 times [2020-12-22 19:05:17,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:17,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294638885] [2020-12-22 19:05:17,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:17,709 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-22 19:05:17,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294638885] [2020-12-22 19:05:17,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246827395] [2020-12-22 19:05:17,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:17,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 19:05:17,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:05:17,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:17,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 15 [2020-12-22 19:05:17,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029437877] [2020-12-22 19:05:17,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 19:05:17,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:17,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 19:05:17,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-12-22 19:05:17,941 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand 15 states. [2020-12-22 19:05:18,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:18,343 INFO L93 Difference]: Finished difference Result 174 states and 190 transitions. [2020-12-22 19:05:18,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 19:05:18,344 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2020-12-22 19:05:18,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:18,345 INFO L225 Difference]: With dead ends: 174 [2020-12-22 19:05:18,345 INFO L226 Difference]: Without dead ends: 174 [2020-12-22 19:05:18,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2020-12-22 19:05:18,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-12-22 19:05:18,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 120. [2020-12-22 19:05:18,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-12-22 19:05:18,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 131 transitions. [2020-12-22 19:05:18,349 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 131 transitions. Word has length 46 [2020-12-22 19:05:18,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:18,349 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 131 transitions. [2020-12-22 19:05:18,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 19:05:18,349 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 131 transitions. [2020-12-22 19:05:18,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 19:05:18,350 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:18,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:18,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-22 19:05:18,564 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:18,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:18,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1231790398, now seen corresponding path program 1 times [2020-12-22 19:05:18,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:18,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454712858] [2020-12-22 19:05:18,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:18,659 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:05:18,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454712858] [2020-12-22 19:05:18,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693410538] [2020-12-22 19:05:18,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:18,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 19:05:18,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:18,945 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:05:18,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:18,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2020-12-22 19:05:18,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693470321] [2020-12-22 19:05:18,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 19:05:18,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:18,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 19:05:18,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:05:18,948 INFO L87 Difference]: Start difference. First operand 120 states and 131 transitions. Second operand 12 states. [2020-12-22 19:05:19,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:19,220 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2020-12-22 19:05:19,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:05:19,221 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-12-22 19:05:19,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:19,222 INFO L225 Difference]: With dead ends: 125 [2020-12-22 19:05:19,222 INFO L226 Difference]: Without dead ends: 125 [2020-12-22 19:05:19,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:05:19,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-22 19:05:19,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 121. [2020-12-22 19:05:19,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-12-22 19:05:19,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2020-12-22 19:05:19,226 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 47 [2020-12-22 19:05:19,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:19,227 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2020-12-22 19:05:19,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 19:05:19,227 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2020-12-22 19:05:19,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 19:05:19,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:19,227 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:19,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-12-22 19:05:19,440 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:19,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:19,441 INFO L82 PathProgramCache]: Analyzing trace with hash -280230485, now seen corresponding path program 2 times [2020-12-22 19:05:19,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:19,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857953583] [2020-12-22 19:05:19,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:05:19,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857953583] [2020-12-22 19:05:19,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927573443] [2020-12-22 19:05:19,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:19,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:05:19,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:05:19,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-22 19:05:19,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:19,668 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:05:19,669 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:05:19,675 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:05:19,679 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-22 19:05:19,680 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:05:19,686 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:05:19,687 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:05:19,688 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:18, output treesize:16 [2020-12-22 19:05:19,726 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:05:19,727 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-22 19:05:19,729 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:05:19,732 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:05:19,740 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:05:19,744 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2020-12-22 19:05:19,746 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:05:19,755 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:05:19,756 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:05:19,757 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:22 [2020-12-22 19:05:20,258 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-22 19:05:20,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:20,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 19 [2020-12-22 19:05:20,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987466090] [2020-12-22 19:05:20,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 19:05:20,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:20,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 19:05:20,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-12-22 19:05:20,260 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand 19 states. [2020-12-22 19:05:20,819 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-12-22 19:05:21,065 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-12-22 19:05:21,208 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-12-22 19:05:21,699 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-12-22 19:05:21,894 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-12-22 19:05:22,197 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-12-22 19:05:23,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:23,908 INFO L93 Difference]: Finished difference Result 449 states and 493 transitions. [2020-12-22 19:05:23,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 19:05:23,908 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-12-22 19:05:23,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:23,910 INFO L225 Difference]: With dead ends: 449 [2020-12-22 19:05:23,910 INFO L226 Difference]: Without dead ends: 449 [2020-12-22 19:05:23,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=509, Invalid=1747, Unknown=0, NotChecked=0, Total=2256 [2020-12-22 19:05:23,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-12-22 19:05:23,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 139. [2020-12-22 19:05:23,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-12-22 19:05:23,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2020-12-22 19:05:23,917 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 47 [2020-12-22 19:05:23,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:23,917 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2020-12-22 19:05:23,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 19:05:23,917 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2020-12-22 19:05:23,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 19:05:23,917 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:23,918 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:24,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:24,131 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:24,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:24,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1570805092, now seen corresponding path program 1 times [2020-12-22 19:05:24,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:24,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146643641] [2020-12-22 19:05:24,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:24,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:05:24,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146643641] [2020-12-22 19:05:24,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756023755] [2020-12-22 19:05:24,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:24,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 19:05:24,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:05:24,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:24,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2020-12-22 19:05:24,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817973946] [2020-12-22 19:05:24,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 19:05:24,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:24,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 19:05:24,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:05:24,431 INFO L87 Difference]: Start difference. First operand 139 states and 153 transitions. Second operand 12 states. [2020-12-22 19:05:24,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:24,630 INFO L93 Difference]: Finished difference Result 176 states and 193 transitions. [2020-12-22 19:05:24,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:05:24,631 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-12-22 19:05:24,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:24,634 INFO L225 Difference]: With dead ends: 176 [2020-12-22 19:05:24,634 INFO L226 Difference]: Without dead ends: 176 [2020-12-22 19:05:24,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:05:24,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-12-22 19:05:24,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 157. [2020-12-22 19:05:24,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-12-22 19:05:24,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 173 transitions. [2020-12-22 19:05:24,639 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 173 transitions. Word has length 49 [2020-12-22 19:05:24,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:24,640 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 173 transitions. [2020-12-22 19:05:24,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 19:05:24,640 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 173 transitions. [2020-12-22 19:05:24,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 19:05:24,640 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:24,640 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:24,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:24,845 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:24,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:24,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1233470330, now seen corresponding path program 2 times [2020-12-22 19:05:24,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:24,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140754055] [2020-12-22 19:05:24,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-22 19:05:25,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140754055] [2020-12-22 19:05:25,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193459352] [2020-12-22 19:05:25,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:25,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:05:25,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:05:25,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 19:05:25,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:25,502 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-22 19:05:25,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:25,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2020-12-22 19:05:25,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779069851] [2020-12-22 19:05:25,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 19:05:25,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:25,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 19:05:25,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2020-12-22 19:05:25,504 INFO L87 Difference]: Start difference. First operand 157 states and 173 transitions. Second operand 23 states. [2020-12-22 19:05:26,283 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2020-12-22 19:05:28,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:28,515 INFO L93 Difference]: Finished difference Result 502 states and 556 transitions. [2020-12-22 19:05:28,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-22 19:05:28,516 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 51 [2020-12-22 19:05:28,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:28,519 INFO L225 Difference]: With dead ends: 502 [2020-12-22 19:05:28,519 INFO L226 Difference]: Without dead ends: 502 [2020-12-22 19:05:28,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=662, Invalid=2530, Unknown=0, NotChecked=0, Total=3192 [2020-12-22 19:05:28,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-12-22 19:05:28,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 176. [2020-12-22 19:05:28,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-12-22 19:05:28,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 200 transitions. [2020-12-22 19:05:28,527 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 200 transitions. Word has length 51 [2020-12-22 19:05:28,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:28,527 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 200 transitions. [2020-12-22 19:05:28,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 19:05:28,528 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 200 transitions. [2020-12-22 19:05:28,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 19:05:28,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:28,528 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:28,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2020-12-22 19:05:28,742 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:28,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:28,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1379956678, now seen corresponding path program 3 times [2020-12-22 19:05:28,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:28,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501143854] [2020-12-22 19:05:28,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:28,842 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-22 19:05:28,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501143854] [2020-12-22 19:05:28,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692774644] [2020-12-22 19:05:28,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:29,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 19:05:29,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:05:29,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-22 19:05:29,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:33,367 WARN L197 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 189 DAG size of output: 41 [2020-12-22 19:05:34,030 WARN L197 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 35 [2020-12-22 19:05:34,052 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-22 19:05:34,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:34,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17] total 26 [2020-12-22 19:05:34,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550769752] [2020-12-22 19:05:34,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-22 19:05:34,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:34,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-22 19:05:34,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2020-12-22 19:05:34,053 INFO L87 Difference]: Start difference. First operand 176 states and 200 transitions. Second operand 26 states. [2020-12-22 19:05:34,563 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2020-12-22 19:05:35,299 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2020-12-22 19:05:35,483 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2020-12-22 19:05:35,698 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-12-22 19:05:35,982 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2020-12-22 19:05:36,304 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 63 [2020-12-22 19:05:36,674 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 81 [2020-12-22 19:05:37,142 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 85 [2020-12-22 19:05:37,576 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 78 [2020-12-22 19:05:37,992 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2020-12-22 19:05:39,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:39,056 INFO L93 Difference]: Finished difference Result 352 states and 385 transitions. [2020-12-22 19:05:39,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-22 19:05:39,057 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 54 [2020-12-22 19:05:39,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:39,059 INFO L225 Difference]: With dead ends: 352 [2020-12-22 19:05:39,059 INFO L226 Difference]: Without dead ends: 316 [2020-12-22 19:05:39,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=430, Invalid=2120, Unknown=0, NotChecked=0, Total=2550 [2020-12-22 19:05:39,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-12-22 19:05:39,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 196. [2020-12-22 19:05:39,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-12-22 19:05:39,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 221 transitions. [2020-12-22 19:05:39,065 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 221 transitions. Word has length 54 [2020-12-22 19:05:39,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:39,065 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 221 transitions. [2020-12-22 19:05:39,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-12-22 19:05:39,066 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 221 transitions. [2020-12-22 19:05:39,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 19:05:39,066 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:39,066 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:39,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:39,280 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:39,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:39,281 INFO L82 PathProgramCache]: Analyzing trace with hash 2123675290, now seen corresponding path program 1 times [2020-12-22 19:05:39,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:39,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372176426] [2020-12-22 19:05:39,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:40,051 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 19:05:40,237 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-12-22 19:05:40,946 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 34 [2020-12-22 19:05:41,488 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:05:41,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372176426] [2020-12-22 19:05:41,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900846779] [2020-12-22 19:05:41,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:41,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 72 conjunts are in the unsatisfiable core [2020-12-22 19:05:41,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:42,402 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2020-12-22 19:05:42,403 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:05:42,419 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:05:42,421 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:05:42,421 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:28 [2020-12-22 19:05:42,861 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:05:42,862 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2020-12-22 19:05:42,864 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:05:42,880 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:05:42,882 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:05:42,882 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:45, output treesize:18 [2020-12-22 19:05:43,073 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-22 19:05:43,074 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:05:43,083 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:05:43,084 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:05:43,085 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2020-12-22 19:05:43,362 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:05:43,362 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2020-12-22 19:05:43,364 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-22 19:05:43,382 INFO L625 ElimStorePlain]: treesize reduction 7, result has 68.2 percent of original size [2020-12-22 19:05:43,384 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:05:43,384 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:30, output treesize:7 [2020-12-22 19:05:43,545 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:05:43,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:43,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 44 [2020-12-22 19:05:43,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157711910] [2020-12-22 19:05:43,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-12-22 19:05:43,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:43,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-12-22 19:05:43,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1740, Unknown=0, NotChecked=0, Total=1892 [2020-12-22 19:05:43,547 INFO L87 Difference]: Start difference. First operand 196 states and 221 transitions. Second operand 44 states. [2020-12-22 19:05:45,960 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-12-22 19:05:46,222 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-12-22 19:05:46,501 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-12-22 19:05:46,786 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-12-22 19:05:47,125 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2020-12-22 19:05:47,503 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2020-12-22 19:05:47,916 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2020-12-22 19:05:48,313 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 19:05:48,821 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-12-22 19:05:49,342 WARN L197 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-12-22 19:05:49,674 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 19:05:50,266 WARN L197 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-12-22 19:05:50,843 WARN L197 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-12-22 19:05:51,393 WARN L197 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-12-22 19:05:52,115 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-12-22 19:05:52,611 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-12-22 19:05:52,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:52,883 INFO L93 Difference]: Finished difference Result 261 states and 289 transitions. [2020-12-22 19:05:52,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-22 19:05:52,884 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 56 [2020-12-22 19:05:52,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:52,885 INFO L225 Difference]: With dead ends: 261 [2020-12-22 19:05:52,885 INFO L226 Difference]: Without dead ends: 261 [2020-12-22 19:05:52,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1414 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=660, Invalid=5502, Unknown=0, NotChecked=0, Total=6162 [2020-12-22 19:05:52,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-12-22 19:05:52,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 214. [2020-12-22 19:05:52,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-12-22 19:05:52,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 240 transitions. [2020-12-22 19:05:52,892 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 240 transitions. Word has length 56 [2020-12-22 19:05:52,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:52,893 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 240 transitions. [2020-12-22 19:05:52,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-12-22 19:05:52,893 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 240 transitions. [2020-12-22 19:05:52,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 19:05:52,894 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:52,894 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:53,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-12-22 19:05:53,110 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:53,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:53,110 INFO L82 PathProgramCache]: Analyzing trace with hash -87481598, now seen corresponding path program 1 times [2020-12-22 19:05:53,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:53,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233020092] [2020-12-22 19:05:53,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 50 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 19:05:53,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233020092] [2020-12-22 19:05:53,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224142128] [2020-12-22 19:05:53,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:53,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 19:05:53,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 15 proven. 38 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 19:05:53,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:53,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2020-12-22 19:05:53,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622707599] [2020-12-22 19:05:53,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 19:05:53,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:53,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 19:05:53,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:05:53,553 INFO L87 Difference]: Start difference. First operand 214 states and 240 transitions. Second operand 17 states. [2020-12-22 19:05:54,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:54,129 INFO L93 Difference]: Finished difference Result 343 states and 382 transitions. [2020-12-22 19:05:54,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 19:05:54,130 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-12-22 19:05:54,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:54,134 INFO L225 Difference]: With dead ends: 343 [2020-12-22 19:05:54,134 INFO L226 Difference]: Without dead ends: 343 [2020-12-22 19:05:54,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2020-12-22 19:05:54,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-12-22 19:05:54,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 228. [2020-12-22 19:05:54,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-12-22 19:05:54,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 260 transitions. [2020-12-22 19:05:54,141 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 260 transitions. Word has length 56 [2020-12-22 19:05:54,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:54,141 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 260 transitions. [2020-12-22 19:05:54,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 19:05:54,141 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 260 transitions. [2020-12-22 19:05:54,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 19:05:54,142 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:54,142 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:54,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-12-22 19:05:54,358 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:05:54,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:54,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1793203566, now seen corresponding path program 3 times [2020-12-22 19:05:54,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:54,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662498575] [2020-12-22 19:05:54,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:54,688 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 38 proven. 54 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:05:54,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662498575] [2020-12-22 19:05:54,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062581431] [2020-12-22 19:05:54,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:55,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 19:05:55,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:05:55,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 19:05:55,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:55,623 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 21 proven. 13 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-12-22 19:05:55,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:55,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 26 [2020-12-22 19:05:55,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363052827] [2020-12-22 19:05:55,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-22 19:05:55,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:55,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-22 19:05:55,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2020-12-22 19:05:55,624 INFO L87 Difference]: Start difference. First operand 228 states and 260 transitions. Second operand 27 states. [2020-12-22 19:05:57,963 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-12-22 19:05:58,267 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-12-22 19:05:58,543 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-22 19:05:58,771 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 51 [2020-12-22 19:05:59,125 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-12-22 19:05:59,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:59,859 INFO L93 Difference]: Finished difference Result 363 states and 407 transitions. [2020-12-22 19:05:59,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-22 19:05:59,860 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 59 [2020-12-22 19:05:59,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:59,862 INFO L225 Difference]: With dead ends: 363 [2020-12-22 19:05:59,862 INFO L226 Difference]: Without dead ends: 363 [2020-12-22 19:05:59,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=695, Invalid=2727, Unknown=0, NotChecked=0, Total=3422 [2020-12-22 19:05:59,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-12-22 19:05:59,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 233. [2020-12-22 19:05:59,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-12-22 19:05:59,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 266 transitions. [2020-12-22 19:05:59,870 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 266 transitions. Word has length 59 [2020-12-22 19:05:59,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:59,870 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 266 transitions. [2020-12-22 19:05:59,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-22 19:05:59,870 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 266 transitions. [2020-12-22 19:05:59,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 19:05:59,871 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:59,871 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:06:00,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-12-22 19:06:00,075 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:06:00,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:06:00,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1491818077, now seen corresponding path program 4 times [2020-12-22 19:06:00,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:06:00,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723636291] [2020-12-22 19:06:00,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:06:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:06:00,241 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 11 proven. 52 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 19:06:00,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723636291] [2020-12-22 19:06:00,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545789445] [2020-12-22 19:06:00,241 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:06:00,328 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:06:00,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:06:00,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 19:06:00,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:06:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 29 proven. 34 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 19:06:00,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:06:00,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 17 [2020-12-22 19:06:00,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849932959] [2020-12-22 19:06:00,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 19:06:00,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:06:00,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 19:06:00,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:06:00,522 INFO L87 Difference]: Start difference. First operand 233 states and 266 transitions. Second operand 17 states. [2020-12-22 19:06:01,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:06:01,299 INFO L93 Difference]: Finished difference Result 385 states and 427 transitions. [2020-12-22 19:06:01,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 19:06:01,300 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 60 [2020-12-22 19:06:01,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:06:01,302 INFO L225 Difference]: With dead ends: 385 [2020-12-22 19:06:01,302 INFO L226 Difference]: Without dead ends: 385 [2020-12-22 19:06:01,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=282, Invalid=840, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 19:06:01,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-12-22 19:06:01,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 227. [2020-12-22 19:06:01,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-12-22 19:06:01,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 256 transitions. [2020-12-22 19:06:01,312 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 256 transitions. Word has length 60 [2020-12-22 19:06:01,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:06:01,312 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 256 transitions. [2020-12-22 19:06:01,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 19:06:01,312 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 256 transitions. [2020-12-22 19:06:01,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 19:06:01,313 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:06:01,313 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:06:01,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-12-22 19:06:01,528 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:06:01,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:06:01,529 INFO L82 PathProgramCache]: Analyzing trace with hash -66000884, now seen corresponding path program 1 times [2020-12-22 19:06:01,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:06:01,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468810589] [2020-12-22 19:06:01,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:06:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:06:01,691 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:06:01,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468810589] [2020-12-22 19:06:01,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327562071] [2020-12-22 19:06:01,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:06:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:06:01,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 19:06:01,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:06:02,031 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 19:06:02,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:06:02,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2020-12-22 19:06:02,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873452028] [2020-12-22 19:06:02,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 19:06:02,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:06:02,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 19:06:02,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:06:02,033 INFO L87 Difference]: Start difference. First operand 227 states and 256 transitions. Second operand 17 states. [2020-12-22 19:06:02,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:06:02,525 INFO L93 Difference]: Finished difference Result 242 states and 270 transitions. [2020-12-22 19:06:02,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:06:02,526 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 61 [2020-12-22 19:06:02,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:06:02,528 INFO L225 Difference]: With dead ends: 242 [2020-12-22 19:06:02,528 INFO L226 Difference]: Without dead ends: 242 [2020-12-22 19:06:02,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2020-12-22 19:06:02,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-12-22 19:06:02,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 231. [2020-12-22 19:06:02,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-12-22 19:06:02,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 260 transitions. [2020-12-22 19:06:02,534 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 260 transitions. Word has length 61 [2020-12-22 19:06:02,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:06:02,534 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 260 transitions. [2020-12-22 19:06:02,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 19:06:02,534 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 260 transitions. [2020-12-22 19:06:02,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 19:06:02,535 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:06:02,535 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:06:02,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-12-22 19:06:02,751 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:06:02,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:06:02,751 INFO L82 PathProgramCache]: Analyzing trace with hash 862777775, now seen corresponding path program 1 times [2020-12-22 19:06:02,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:06:02,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972211604] [2020-12-22 19:06:02,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:06:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:06:03,733 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-12-22 19:06:04,553 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-12-22 19:06:04,756 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2020-12-22 19:06:04,964 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2020-12-22 19:06:05,179 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2020-12-22 19:06:05,414 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2020-12-22 19:06:05,690 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 53 [2020-12-22 19:06:05,941 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2020-12-22 19:06:07,196 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:06:07,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972211604] [2020-12-22 19:06:07,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765918610] [2020-12-22 19:06:07,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:06:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:06:07,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 116 conjunts are in the unsatisfiable core [2020-12-22 19:06:07,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:06:07,475 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:06:07,475 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:06:07,485 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:06:07,486 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:06:07,486 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-12-22 19:06:07,584 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:06:07,585 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-22 19:06:07,586 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:06:07,593 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:06:07,600 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:06:07,601 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:06:07,602 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:14 [2020-12-22 19:06:07,908 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2020-12-22 19:06:07,909 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:06:07,923 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:06:07,924 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:06:07,925 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:36 [2020-12-22 19:06:08,303 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:06:08,303 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 53 [2020-12-22 19:06:08,305 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:06:08,363 INFO L625 ElimStorePlain]: treesize reduction 20, result has 66.1 percent of original size [2020-12-22 19:06:08,365 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:06:08,365 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:25 [2020-12-22 19:06:08,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:06:08,895 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2020-12-22 19:06:08,896 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:06:08,926 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:06:08,928 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:06:08,931 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:55, output treesize:28 [2020-12-22 19:06:09,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:06:09,436 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2020-12-22 19:06:09,438 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:06:09,462 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:06:09,463 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:06:09,465 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:43 [2020-12-22 19:06:10,848 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:06:10,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:06:10,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:06:10,878 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:06:10,878 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 103 [2020-12-22 19:06:10,881 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:06:10,973 INFO L625 ElimStorePlain]: treesize reduction 25, result has 75.7 percent of original size [2020-12-22 19:06:10,975 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:06:10,976 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:06:10,978 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:06:10,979 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:06:10,979 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:81, output treesize:78 [2020-12-22 19:06:10,981 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:06:10,981 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:06:10,982 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:06:11,193 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:06:11,194 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:06:11,195 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:06:11,389 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:06:11,390 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:06:11,393 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:06:11,395 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:06:11,396 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:06:11,400 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:06:11,401 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:06:11,402 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:06:11,403 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:06:11,403 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:06:11,405 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:06:11,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:06:11,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:06:11,460 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:06:11,461 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 64 [2020-12-22 19:06:11,468 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:06:11,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:06:11,490 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 34 [2020-12-22 19:06:11,492 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:06:11,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:06:11,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:06:11,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:06:11,505 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 46 [2020-12-22 19:06:11,507 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 19:06:11,604 INFO L625 ElimStorePlain]: treesize reduction 66, result has 53.8 percent of original size [2020-12-22 19:06:11,606 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-22 19:06:11,606 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:195, output treesize:77 [2020-12-22 19:06:16,661 WARN L197 SmtUtils]: Spent 4.87 s on a formula simplification that was a NOOP. DAG size: 37 [2020-12-22 19:06:20,181 WARN L197 SmtUtils]: Spent 3.31 s on a formula simplification that was a NOOP. DAG size: 39 [2020-12-22 19:06:25,012 WARN L197 SmtUtils]: Spent 4.63 s on a formula simplification that was a NOOP. DAG size: 44 [2020-12-22 19:06:25,018 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-12-22 19:06:25,018 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:06:35,774 WARN L197 SmtUtils]: Spent 10.50 s on a formula simplification that was a NOOP. DAG size: 50 [2020-12-22 19:06:35,781 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 7, 1] term [2020-12-22 19:06:35,781 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:06:41,579 WARN L197 SmtUtils]: Spent 5.60 s on a formula simplification that was a NOOP. DAG size: 44 [2020-12-22 19:06:41,590 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:06:48,456 WARN L197 SmtUtils]: Spent 6.64 s on a formula simplification that was a NOOP. DAG size: 52 [2020-12-22 19:06:56,979 WARN L197 SmtUtils]: Spent 6.26 s on a formula simplification that was a NOOP. DAG size: 61 [2020-12-22 19:07:03,864 WARN L197 SmtUtils]: Spent 6.60 s on a formula simplification that was a NOOP. DAG size: 61 [2020-12-22 19:07:03,882 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-12-22 19:07:03,883 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:07:03,898 INFO L443 ElimStorePlain]: Different costs {4=[|#memory_int|], 10=[v_prenex_3]} [2020-12-22 19:07:03,905 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2020-12-22 19:07:03,906 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:07:03,939 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:07:03,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:07:03,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:07:03,949 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 17 [2020-12-22 19:07:03,951 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:07:03,972 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:07:03,975 INFO L547 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:07:03,975 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 9 variables, input treesize:106, output treesize:3 [2020-12-22 19:07:04,315 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:07:04,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:07:04,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 74 [2020-12-22 19:07:04,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259423209] [2020-12-22 19:07:04,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-12-22 19:07:04,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:07:04,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-12-22 19:07:04,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=5150, Unknown=1, NotChecked=0, Total=5402 [2020-12-22 19:07:04,320 INFO L87 Difference]: Start difference. First operand 231 states and 260 transitions. Second operand 74 states. [2020-12-22 19:07:05,773 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-12-22 19:07:06,434 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2020-12-22 19:07:07,486 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-12-22 19:07:08,070 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2020-12-22 19:07:08,381 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2020-12-22 19:07:09,009 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-12-22 19:07:09,480 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-12-22 19:07:10,809 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2020-12-22 19:07:11,003 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-12-22 19:07:11,309 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-12-22 19:07:11,504 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-12-22 19:07:11,811 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-12-22 19:07:12,023 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-12-22 19:07:12,423 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2020-12-22 19:07:12,907 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 62 [2020-12-22 19:07:13,355 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 67 [2020-12-22 19:07:14,091 WARN L197 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 66 [2020-12-22 19:07:14,614 WARN L197 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 71 [2020-12-22 19:07:15,214 WARN L197 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 76 [2020-12-22 19:07:15,935 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2020-12-22 19:07:16,536 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2020-12-22 19:07:17,033 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2020-12-22 19:07:25,846 WARN L197 SmtUtils]: Spent 8.37 s on a formula simplification. DAG size of input: 141 DAG size of output: 88 [2020-12-22 19:07:26,281 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2020-12-22 19:07:27,299 WARN L197 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 70 [2020-12-22 19:07:27,592 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-22 19:07:36,215 WARN L197 SmtUtils]: Spent 8.42 s on a formula simplification. DAG size of input: 147 DAG size of output: 90 [2020-12-22 19:07:36,707 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-22 19:07:53,406 WARN L197 SmtUtils]: Spent 16.49 s on a formula simplification. DAG size of input: 156 DAG size of output: 92 [2020-12-22 19:07:53,936 WARN L197 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 72 [2020-12-22 19:07:54,176 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-12-22 19:07:54,783 WARN L197 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 77 [2020-12-22 19:07:55,106 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-12-22 19:08:11,747 WARN L197 SmtUtils]: Spent 16.46 s on a formula simplification. DAG size of input: 150 DAG size of output: 90 [2020-12-22 19:08:12,132 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-12-22 19:08:30,871 WARN L197 SmtUtils]: Spent 18.52 s on a formula simplification. DAG size of input: 160 DAG size of output: 109 [2020-12-22 19:08:31,354 WARN L197 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 67 [2020-12-22 19:08:31,623 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-12-22 19:08:32,009 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-12-22 19:08:44,730 WARN L197 SmtUtils]: Spent 12.51 s on a formula simplification. DAG size of input: 139 DAG size of output: 122 [2020-12-22 19:08:45,055 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-12-22 19:08:49,425 WARN L197 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-12-22 19:09:02,192 WARN L197 SmtUtils]: Spent 12.54 s on a formula simplification. DAG size of input: 141 DAG size of output: 124